JAVA

Hanoi

2006-06-12T21:59:00.000+08:00

package lab7;

public class Hanoi {
public static void main(String[] args)
{
recursive(3,'A','C','B');
}

public static void recursive(int n, char src, char aux, char dst)
{
if(n==0)
{
return;
}
else
{
recursive(n-1,src, dst, aux);
System.out.println("Move "+n+" from "+src+" to "+dst);
recursive(n-1,aux,src,dst);
}
}
}

LacRecursivsSqureSum

2006-06-12T21:21:00.000+08:00

package Lab7;

public class LacRecursivsSqureSum
{
public static void main(String[] args)
{
System.out.println("squreSum()"+squreSum(5));
}

public static int squreSum(int n)
{
if(n==1)
{
return 1;
}
else
{
return (squreSum(n-1)+n*n);
}
}
}

LabModularSort

2006-06-09T18:06:00.000+08:00

package lab7;
import javax.swing.JOptionPane;

public class LabModularSort {
private int arry[];
private static int x,L;

public LabModularSort( )
{
x=Integer.parseInt(JOptionPane.showInputDialog("Please enter the number of arrary:"));
this.arry = new int [x];
for (int r = 0; r < arry.length; r++)
{
arry[r]=Integer.parseInt(JOptionPane.showInputDialog("Please enter number:"));
}
}
public LabModularSort (int[] a)
{
this.arry = new int [a.length];

for(int r=0; r {
arry[r]=a[r];
}

}
public static LabModularSort sort( LabModularSort newAry)
{

LabModularSort s = new LabModularSort ( newAry.arry);
int x=0;
System.out.print("original :");
for(int i=0;i {
System.out.print(s.arry[i]+",");
if (i==s.arry.length-1)
System.out.println();
}

for(int cont1=0;cont1< newAry.arry.length;cont1++)
{
for (int cont2=cont1+1;cont2< newAry.arry.length;cont2++)
{
if (s.arry[cont1] > s.arry[cont2])
{
x = s.arry[cont1];
s.arry[cont1] = s.arry[cont2];
s.arry[cont2] = x;
}
}

}
System.out.print("sorting : ");
for(int i=0;i {
System.out.print(+s.arry[i]+",");
}

System.exit(0);
return s;
}

}
----------------
package lab7;

public class LabModularSortDemo {
public LabModularSortDemo() {
}

public static void main(String[] args) {
LabModularSort labmodularsortdemo = new LabModularSort();
LabModularSort.sort(labmodularsortdemo);
// labmodularsortdemo.toString(labmodularsortdemo);
}
}
---

HW Square

2006-06-05T18:55:00.000+08:00

package lab7;
import javax.swing.*;
public class ArraySquare {
private static int ary[];
private static int x,L;

public ArraySquare()
{
this.ary = new int [Integer.parseInt(JOptionPane.showInputDialog("Please enter the numbers of arrary elements:"))];
for(int r=0; r {
ary[r]=Integer.parseInt(JOptionPane.showInputDialog("Please enter number:"));
}
}
public ArraySquare(int[] a)
{
this.ary = new int [a.length];

for(int r=0; r {
ary[r]=a[r];
}

}

public static ArraySquare Square( ArraySquare newArrary)
{
ArraySquare square = new ArraySquare(newArrary.ary );
for (int i = 0; i< newArrary.ary.length;i++)
{
square.ary[i] = newArrary.ary[i] * newArrary.ary[i];
// System.out.print(ary[i]+", ");
}
return square;
}

public void toString (ArraySquare square)
{
for(int i=0;i {
System.out.print(square.ary[i]+",");
}
System.exit(0);
}

}

---------
package lab7;

public class ArrarySquareDemo {

public static void main(String[] args) {
ArraySquare squareDemo = new ArraySquare();

ArraySquare.Square(squareDemo);
squareDemo.toString(squareDemo);
}
}
----

LabSorb

2006-06-05T18:05:00.000+08:00

package lab7;

public class LabSort
{
public static void main(String[] args)
{
int [] sort = {1,3,5,4,9};
int x=0;
for(int cont1=0;cont1 {
for (int cont2=cont1+1;cont2 {
if (sort[cont1] > sort[cont2])
{
x = sort[cont1];
sort[cont1] = sort[cont2]; //可知i
sort[cont2] = x; //可知j
}
}

}
for(int i=0;i {
System.out.print(sort[i]+",");
}
}
}

Lab Fraction

2006-05-22T20:55:00.000+08:00

package Lab7;

public class Fraction
{
private int numerator,denominator;

public Fraction(int newNumerator, int newDenominator )
{
this.numerator=newNumerator;
this.denominator =newDenominator;
}
public Fraction( )
{
this.numerator=0;
this.denominator =1;
}

public static Fraction add(Fraction C1,Fraction C2)
{
Fraction C3 = new Fraction(0,0);
C3.numerator = C1.numerator*C2.denominator + C2.numerator*C1.denominator ;
C3.denominator = C1.denominator*C2.denominator;
int r;
int n=Math.min(C3.numerator,C3.denominator);
int m=Math.max(C3.numerator,C3.denominator);
while(n != 0)
{
r = m % n;
m = n;
n = r;
}
C3.numerator=C3.numerator/m;
C3.denominator=C3.denominator/m;
return C3;
}
public static String toString(Fraction c3)
{
return (Integer.toString(c3.numerator)+"/"+ Integer.toString(c3.denominator));
}

}
----------------------
package Lab7;

public class FractionDemo {

public static void main(String[] args) {
Fraction F1 = new Fraction(9,8);
Fraction F2 = new Fraction(3,8);
Fraction F3 = Fraction.add( F1, F2);
System.out.println(F3.toString(F3));
}
}

Complex

2006-05-15T21:07:00.000+08:00

package Lab7;
public class Complex
{
private double real,imaginary ;
public Complex(double realN, double imaginaryN )
{
this.real=realN;
this.imaginary =imaginaryN;
}
public Complex()
{
real = 0 ;
imaginary = 0;
}
public Complex(double newValue )
{
this.real= newValue;
this.imaginary =0;
}
public static Complex add(Complex C1,Complex C2)
{
Complex C3 = new Complex(0,0);
C3.real = C1.real + C2.real ;
C3.imaginary = C1.imaginary+C2.imaginary;
return C3;
}
public static String toString(Complex C3)
{
return Integer.toString((int)C3.real)+"+"+Integer.toString((int)C3.imaginary )+"i";
}
public void writeOutput()
{
System.out.println(real+"+" + imaginary + "i");
}

}

-------
package Lab7;

public class ComplexDemo {
public static void main(String[] args) {
Complex C1 = new Complex(2,3);
C1.writeOutput();
Complex C2 = new Complex(4,5);
C2.writeOutput();
Complex C3 = Complex.add(C1,C2);
System.out.println("The value is : "+C3.toString(C3));

}
}

Homework 5-8-2005 Temp

2006-05-15T18:54:00.000+08:00

package lab7;

public class Temperature
{
private double degree;
private String scale;

public void assumeScale ()
{
scale = "C" ;
}
public void assumeDegree ()
{
degree= 0 ;
}
public void assumeF (float degreeF)
{
degreeF= 0 ;
}

public void assumeC (float degreeC)
{
degreeC= 0 ;
}
// constructor 1
public double calDegreeF (double degreeInput,String scale )
{
if (scale.equalsIgnoreCase("C") )
{
this.degree = (9 * (degreeInput / 5)) + 32;
}
else
{
this.degree = (5*(degreeInput - 32)/9);
}
return (degree);
}
// public double calDegreeC (double degreeF,String scale )
//{

//return (degree);

public void setscaleC(String scaleInput)
{
this.scale = scaleInput;
}

public String getScale()
{
return(scale);
}

}
----------------------
package lab7;

import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class TemperatureDemo
{
public static void main(String[] args)throws IOException
{
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System. in));

System.out.println("Enter degrees :");
Temperature temperature = new Temperature();
System.out.println("Equivalent Celsius temperature is "+ temperature.calDegreeF( 0.0,"C"));
// set the scale
temperature.setscaleC("F");
System.out.println("Equivalent Celsius temperature is "+ temperature.calDegreeF(32.0,temperature.getScale() ));
System.out.println("The scale is "+ temperature.getScale() );
System.out.println("Equivalent Celsius temperature is "+ temperature.calDegreeF( -40.0,"C"));
System.out.println("Equivalent Celsius temperature is "+ temperature.calDegreeF( 100.0,"C"));
}
}

lab fab

2006-05-08T21:52:00.000+08:00

package lab7;

public class Fibonacci {
private static int aNumber = 1;
private static int bNumber = 1 ;
private static int cNumber=0;
public static int next()
{
cNumber = aNumber + bNumber;
aNumber = bNumber;
bNumber =cNumber ;
return (cNumber);
}
public static void main(String[] args) {
Fibonacci.next();
System.out.println( "1 :"+cNumber);
Fibonacci.next();
System.out.println( "2 :"+cNumber);
Fibonacci.next();
System.out.println( "3 :"+cNumber);
Fibonacci.next();
System.out.println( "4 :"+cNumber);
Fibonacci.next();
System.out.println( "5 :"+cNumber);
System.gc(); }

}

Counter2

2006-05-08T19:48:00.000+08:00

package Lab7;

public class Counter2 {
private/** static*/int count=0 ;
public void reset()
{
count = 0;
// System.out.println("reset counter,");
}

public void inc()
{
++count ;
// System.out.println("counter+1,");
}

public void dec()
{
--count ;
// System.out.println("counter-1,");
}

public void output()
{
System.out.println("counter now is ："+ count);
}

public int getCounter()
{
return count ;
}

public boolean equalS(Counter2 counterX)
{

return this.count == counterX.count;
}
}
-----------
package Lab7;

public class Counter2Demo {

public static void main(String[] args) {
Counter2 counterX= new Counter2();
Counter2 counterB= new Counter2();
counterX.inc();
counterX.inc();
counterX.inc();
//counterA.reset();
counterX.output();
counterB.output();
System.out.println("counterA & counter equals : "+counterX.equalS(counterB));
}
}

Counter

2006-05-08T18:15:00.000+08:00

package Lab7;

public class Counter {
private int count = 0 ;

public void reset()
{
count = 0;
System.out.println("reset counter,");
}

public void inc()
{
++count ;
System.out.println("counter+1,");
}

public void dec()
{
--count ;
System.out.println("counter-1,");
}

public void output()
{
System.out.println("counter now is ："+ count);
}

}
---------------
package Lab7;

public class CounterDemo {

public static void main(String[] args) {
Counter counter= new Counter();
counter.output();
counter.inc();
counter.output();
counter.inc();
counter.dec();
counter.output();
counter.reset();
counter.output();
}
}
---------------------------

LabJavaConstructor

2006-05-08T18:13:00.000+08:00

package Lab7;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class LabJavaConstructor
{
private String month;
private int day;
private int year;

public LabJavaConstructor()
{
month = "January";
day = 1;
year = 1000;
}

public LabJavaConstructor(int monthInt, int day, int year)
{
setDate(monthInt, day, year);
}

public LabJavaConstructor(String monthString, int day, int year)
{
setDate(monthString, day, year);
}

public LabJavaConstructor(int year)
{
setDate(1, 1, year);
}

public LabJavaConstructor(LabJavaConstructor aDate)
{
if (aDate == null)
{
System.out.println("Fatal Error");
System.exit(0);
}
else
{
month = aDate.month;
day = aDate.day;
year = aDate.year;
}
}

public void setDate(int monthInt, int day, int year)
{
if (dateOK(monthInt, day, year))
{
this.month = monthString(monthInt);
this.day = day;
this.year = year;
}
else
{
System.out.println("Fatal Error");
System.exit(0);
}
}

public void setDate(String monthString, int day, int year)
{
if (dateOK(monthString, day, year))
{
this.month = monthString;
this.day = day;
this.year = year;
}
else
{
System.out.println("Fatal Error");
System.exit(0);
}
}

public void setDate(int year)
{
setDate(1, 1, year);
}

public void setYear(int year)
{
if ( (year <= 1000) || (year >= 9999))
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.year = year;
}

public void setMonth(int monthNumber)
{
if ( (monthNumber <= 0) || (monthNumber > 12))
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.month = monthString(monthNumber);
}

public void setDay(int day)
{
if ( (day <= 0) || (day > 31))
{
System.out.println("Fatal Error");
System.exit(0);
}
else
this.day = day;
}

public int getMonth()
{
if (month.equalsIgnoreCase("January"))
return 1;
else if (month.equalsIgnoreCase("February"))
return 2;
else if (month.equalsIgnoreCase("March"))
return 3;
else if (month.equalsIgnoreCase("April"))
return 4;
else if (month.equalsIgnoreCase("may"))
return 5;
else if (month.equalsIgnoreCase("June"))
return 6;
else if (month.equalsIgnoreCase("July"))
return 7;
else if (month.equalsIgnoreCase("August"))
return 8;
else if (month.equalsIgnoreCase("September"))
return 9;
else if (month.equalsIgnoreCase("October"))
return 10;
else if (month.equalsIgnoreCase("November"))
return 11;
else if (month.equalsIgnoreCase("December"))
return 12;
else
{
System.out.println("Fatal Error.");
System.exit(0);
return 0;
}
}

public int getDay()
{
return day;
}

public int getYear()
{
return year;
}

public String toString()
{
return (month + " " + day + ", " + year);
}

public boolean equals(LabJavaConstructor otherDate)
{
return ( (month.equalsIgnoreCase(otherDate.month))
&& (day == otherDate.day) && (year == otherDate.year));
}

public boolean precedes(LabJavaConstructor otherDate)
{
return ( (year < otherDate.year) ||
(year == otherDate.year && getMonth() < otherDate.getMonth()) ||
(year == otherDate.year && month.equals(otherDate.month) &&
day < otherDate.day));
}

public void readInput() throws IOException
{
boolean tryAgain = true;
BufferedReader keyboard = new BufferedReader(new InputStreamReader(System. in));

while (tryAgain)
{
System.out.println("Enter month, day, and year.");
System.out.println("Do not use a comma.");
String monthInput = keyboard.readLine();
int dayInput = keyboard.read();
int yearInput = keyboard.read();

if (dateOK(monthInput, dayInput, yearInput))
{
setDate(monthInput, dayInput, yearInput);
tryAgain = false;
}
else
System.out.println("Illegal date. Reenter input.");
}
}

public void writeOutput()
{
System.out.println(month +"/" + day + ", "+ year);
}

private boolean dateOK(int monthInt, int dayInt, int yearInt)
{
return ( (monthInt >= 1) &&(monthInt <= 12) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999));
}

private boolean dateOK(String monthString, int dayInt, int yearInt)
{
return (monthOK(monthString) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999));
}

private boolean monthOK(String month)
{
return (month.equals("January") || month.equals("February") || month.equals("March") ||
month.equals("April") || month.equals("May") || month.equals("June") ||
month.equals("July") || month.equals("August") || month.equals("September") ||
month.equals("October") ||month.equals("November") || month.equals("December"));
}

public String monthString(int monthNumber)
{
switch(monthNumber)
{
case 1:
return "January";
case 2:
return "February";
case 3:
return "March";
case 4:
return "April";
case 5:
return "May";
case 6:
return "June";
case 7:
return "July";
case 8:
return "August";
case 9:
return "September";
case 10:
return "October";
case 11:
return "November";
case 12:
return "December";
default:
System.out.println("Fatal Error.");
System.exit(0);
return "Error";
}
}

}

------------------------
package Lab7;

public class LabJavaConstructorDemo {
public LabJavaConstructorDemo() {
}

public static void main(String[] args) {
LabJavaConstructor date1 = new LabJavaConstructor(),
date2 = new LabJavaConstructor(),
date3 = new LabJavaConstructor(),
date4 = new LabJavaConstructor();
date1.setDate(1, 2, 2008);
date2.setDate("February", 2, 2008);
date3.setDate(2008);
date1.writeOutput();
date2.writeOutput();
date3.writeOutput();

System.out.println("Whose birthday is "+ date1 +"?");
System.out.println("Whose birthday is "+ date2 +"?");
System.out.println("Whose birthday is "+ date3 +"?");
System.out.println("Whose default date is"+ date4 +".");

}
}

Hw0425

2006-05-08T18:11:00.000+08:00

package Lab7;
import javax.swing.*;

public class Homework0425
{
private String month ;
private int day ;
private int year ;

public void setDate (int monthInt , int day , int year)
{
if (dateOK(monthInt,day,year))
{
this.day = day;
this.year = year ;
this.month = monthString(monthInt);
}
else
{
System.out.println("Fatal Error");
}
}
public void setDate(String monthString, int day, int year)
{
if (dateOK(monthString, day, year))
{
this.month = monthString;
this.day = day;
this.year = year;
}
else
{
System.out.println("Fatal Error");
System.exit(0);
}
}

public void setDate(int year)
{
setDate(1, 1, year);
}
private boolean dateOK(int monthInt, int dayInt, int yearInt)
{
return ( (monthInt >= 1) &&(monthInt <= 12) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999));
}

private boolean dateOK(String monthString, int dayInt, int yearInt)
{
return (monthOK(monthString) &&
(dayInt >= 1) && (dayInt <= 31) &&
(yearInt >= 1000) && (yearInt <= 9999));
}

private boolean monthOK(String month)
{
return (month.equals("January") || month.equals("February") || month.equals("March") ||
month.equals("April") || month.equals("May") || month.equals("June") ||
month.equals("July") || month.equals("August") || month.equals("September") ||
month.equals("October") ||month.equals("November") || month.equals("December"));
}

public void writeOutput()
{
System.out.println(month +"/" + day + ", "+ year);
}

public void readInput()
{
boolean tryAgain = true ;
while (tryAgain){
String monthInput =(JOptionPane.showInputDialog("Enter a month")) ;
int dayInput = Integer.parseInt( JOptionPane.showInputDialog("Enter a day")) ;
int yearInput = Integer.parseInt(JOptionPane.showInputDialog("Enter a year")) ;
// month = monthString(monthInput);

if (dateOK(monthInput, dayInput, yearInput))
{
setDate(monthInput, dayInput, yearInput);
tryAgain = false;
}
else
System.out.println("Illegal date. Reenter input.");
}

}

public String getMonth()
{
return month ;
}

public String monthString (int monthNumber)
{
switch (monthNumber)
{
case 1:
return "Jan";
case 2:
return "Feb";
case 3:
return "Mar";
case 4:
return "Apr";
case 5:
return "May";
case 6:
return "Jun";
case 7:
return "July";
case 8:
return "Aug";
case 9:
return "Sep";
case 10:
return "Oct";
case 11:
return "Nov";
case 12:
return "Dec";
default :
System.out.println("Fatal Error") ;
System.exit(0) ;
return "Error";
}
}

}
----------------------------------------------
package Lab7;

public class Hw0425Demo {
public static void main(String[] args) {
Homework0425 date1 = new Homework0425(),
date2 = new Homework0425(),
date3 = new Homework0425();

date1.setDate(1, 2, 2008);
date2.setDate("February", 2, 2008);
date3.setDate(2008);
date1.writeOutput();
date2.writeOutput();
date3.writeOutput();
}
}
------------

Lab 0424

2006-04-24T21:08:00.000+08:00

package untitled8;
/**
* s9224205
*/

import javax.swing.*;
public class Lab0424
{
private String month ;
private int day ;
private int year ;

/** public void setDate (int newMonth , int newDay , int newYear)
{
day = newDay;
year = newYear ;
month = monthString(newMonth);

}
*/
public void writeOutput()
{
System.out.println(month +"/" + day + ", "+ year);
}

public boolean equals(Lab0424 otherDate)
{
return ((month.equals(otherDate.month) )&&(day == otherDate.day)&&(year == otherDate.year));
}

public boolean precedes(Lab0424 otherDate)
{
return ((year (year == otherDate.year && getMonth() < otherDate.getMonth())||
(year == otherDate.year && month.equals(otherDate.month )&&day < otherDate.day) );
}

public void setDate(int day ,String month,int year)
{
this.day = day ;
this.year = year ;
this.month = month;
}

public int getMonth()
{
if (month.equalsIgnoreCase("Jan"))
return 1;
else if (month.equalsIgnoreCase("Feb"))
return 2;
else if (month.equalsIgnoreCase("Mar"))
return 3;
else if (month.equalsIgnoreCase("Apr"))
return 4;
else if (month.equalsIgnoreCase("May"))
return 5;
else if (month.equalsIgnoreCase("Jun"))
return 6;
else if (month.equalsIgnoreCase("July"))
return 7;
else if (month.equalsIgnoreCase("Aug"))
return 8;
else if (month.equalsIgnoreCase("Sep"))
return 9;
else if (month.equalsIgnoreCase("Oct"))
return 10;
else if (month.equalsIgnoreCase("Nov"))
return 11;
else if (month.equalsIgnoreCase("Dec"))
return 12;
else {
System.out.println("Fatal Error");
System.gc() ;
System.exit(0);
return 0;
}

}
public int getDay()
{
return day;
}

public int getYear()
{
return year;
}

public String toString()
{
return (month+ " "+day+", "+year);
}
}

----------
package untitled8;

public class Lab0424Demo {
public static void main(String [] args)
{
Lab0424 date1 = new Lab0424() ,
date2 = new Lab0424() ;

date1.setDate(17,"Jun",1882);
date2.setDate(17,"Jun",1882);
if (date1.equals(date2) )
System.out.println(date1+" eaquls "+ date2);
else
System.out.println(date1+" does not eaquls "+ date2);
date1.setDate(28,"July",1882);

if (date1.precedes(date2) )
System.out.println(date1+" comes before "+ date2);
else
System.out.println(date2+" comes brfore or is equal to "+ date1);
//System.out.println(date1.toString()+" "+"\n"+date1.getMonth()+"/"+date1.getDay()+", "+date1.getYear() );
System.exit(0) ;
}
}

Lab Class Definitions II

2006-04-10T20:48:00.000+08:00

class
-------
/**
* s9224205
*/

import javax.swing.*;
public class Lab0410
{
private String month ;
private int day ;
private int year ;

/** public void setDate (int newMonth , int newDay , int newYear)
{
day = newDay;
year = newYear ;
month = monthString(newMonth);

}
*/
public void writeOutput()
{
System.out.println(month +"/" + day + ", "+ year);
}

public void readInput()
{
int newMonth = Integer.parseInt(JOptionPane.showInputDialog("Enter a month")) ;
day = Integer.parseInt( JOptionPane.showInputDialog("Enter a day")) ;
year = Integer.parseInt(JOptionPane.showInputDialog("Enter a year")) ;
month = monthString(newMonth);
}

public String getMonth()
{
return month ;
}

public String monthString (int monthNumber)
{
switch (monthNumber)
{
case 1:
return "Jan";
case 2:
return "Feb";
case 3:
return "Mar";
case 4:
return "Apr";
case 5:
return "May";
case 6:
return "Jun";
case 7:
return "July";
case 8:
return "Aug";
case 9:
return "Sep";
case 10:
return "Oct";
case 11:
return "Nov";
case 12:
return "Dec";
default :
System.out.println("Fatal Error") ;
System.exit(0) ;
return "Error";
}
}

}

-------

application
-------
public class DemoLab0410 {
public static void main(String [] args)
{
Lab0410 date = new Lab0410() ;

// date.setDate(6,17,2000);
// date.writeOutput() ;
date.readInput(0);
date.writeOutput() ;

/** System.out.println(date.month);
* month has private access in Lab0410
* so write a method getMonth in Lab0410
*/
System.out.println(date.getMonth() );
System.exit(0) ;
}
}
-------

Lab Class Definitions

2006-04-10T18:30:00.000+08:00

public class DateFirstTry
{
public String month;
public int day;
public int year;
public void writeOutput()
{
System.out.println(month+" "+day+","+year);

}
public void makeItNewYears()
{
month ="January";
day=1;

}
}

---------------------------------

public class DateFirstTryDemo
{

public static void main(String[] args)
{
DateFirstTry date1,date2;
date1=new DateFirstTry();
date2=new DateFirstTry();

date1.month="December";
date1.day=31;
date1.year=2007;
System.out.println("date1:");
date1.writeOutput();
System.out.println("The New year is :");
date1.makeItNewYears();
date1.writeOutput();

date2.month="July";
date2.day=4;
date2.year=1776;
System.out.println("date2:");
date2.writeOutput();
System.out.println("The New year is :");
date2.makeItNewYears();
date2.writeOutput();
}
}

-----------------------------------

date1:
December 31, 2007
The New year is :
January 1, 2007

date2:
July 4, 1776
The New year is :
January 1, 1776

exponential

2006-03-27T21:36:00.000+08:00

import javax.swing.*;
public class exponential
{
public static void main(String[] args)
{
double sum = 0;
int n = 1;
double z = 1 ;
String input = JOptionPane.showInputDialog("Enter a number") ;
int inputNumber = Integer.parseInt(input);
for (int j = 1 ; j <=10;j++)
{
n = j * n;
z = inputNumber*z;
sum =sum+ (z/n);
System.out.print(n+" ,");
System.out.print(z+" ,");
System.out.println(sum+" ,");
}
System.out.print("The 10 factorial = "+n+" ,");
System.out.print("The X^10 ="+z+" ,");
sum =sum+1;
System.out.println("Sum = "+sum);
// System.out.println(sum);
}
}

Homework Fibonacci Numbers

2006-03-26T22:23:00.000+08:00

package Hw5;

/**
*

9224205 江昇祐

*
*

ibonacci numbers.
List the first 100 numbers and the ratio of
a number to its previous number.

*
*

CYCUIE

*
*/
public class fibonacci {

public static void main(String[] args) {
double firstNumber = 0;
double secondNumber = 1 ;
double thirdNumber = 0 ;
double ratio = 0 ;

for (int i = 2 ; i<100; i++)
{
if(i==2){
System.out.println("f0 = " + firstNumber+"the ratio =" + ratio);
System.out.println("f1 = " + secondNumber+"the ratio =" + ratio);
}
thirdNumber= firstNumber+secondNumber ;
ratio = thirdNumber/secondNumber;

System.out.println("f"+i+" = "+thirdNumber+ "the ratio =" + ratio);
firstNumber = secondNumber;
secondNumber=thirdNumber ;

}
}
}

lab Finding Max By For

2006-03-20T20:26:00.000+08:00

//9224205
import java.io.*;
public class labFindingMaxByFor {
public static void main(String[] args) throws IOException{
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter number 1");
int max= Integer.parseInt(keyboard.readLine());
for (int i = 1; i<10;i++)
{
System.out.println("Enter number" + (i + 1));
String inputNumber = keyboard.readLine();
int inputNumberInt = Integer.parseInt(inputNumber.trim());
if (max < inputNumberInt)
max = inputNumberInt;
}
System.out.println("The biggest one is "+max);
}
}

Lab Tax & MaxMin

2006-03-13T21:28:00.000+08:00

/**
0~370,000元 6 % 0元
370,001~990,000元 13% 25,900元
990,001~1,980,000元 21% 105,100元
1,980,001~3,720,000元 30 % 283,300元
>3,720,001元 40% 655,300元

9224205 */

public class LabTaxCalculation {

public static void main(String[] args) {
double income=1000000;
double tax = 0 ;
if (income <370001)
tax = income*0.06+0;
else if (income < 990001)
tax = (income -370000)*0.13+25900 ;
else if (income < 1980001)
tax = (income -990000)*0.21+105110 ;
else if (income < 3720001)
tax = (income-1980000)*0.3 +283300;
else
tax = (income-3720000)*0.4 + 655300;

System.out.print("tax = " + tax ) ;

}
}

--------------------------------------------------
//9224205
package welcome;
import java.io.*;
public class maxMin {

public static void main(String[] args) throws IOException{

BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));

System.out.println("the first number is :") ;
String inputNumber1 = keyboard.readLine();

System.out.println("the second number is :") ;
String inputNumber2 = keyboard.readLine();

System.out.println("the third number is :") ;
String inputNumber3 = keyboard.readLine();

System.out.println("the forth number is :") ;
String inputNumber4 = keyboard.readLine();

int number1 = Integer.parseInt(inputNumber1);
int number2 = Integer.parseInt(inputNumber2);
int number3 = Integer.parseInt(inputNumber3);
int number4 = Integer.parseInt(inputNumber4);

int number5 = Integer.parseInt(inputNumber1);
int number6 = Integer.parseInt(inputNumber2);
int number7 = Integer.parseInt(inputNumber3);
int number8 = Integer.parseInt(inputNumber4);

if (number1 number1=number2;

if (number1 number1=number3;

if (number1 number1=number4;

if (number5>number6)
number5=number6;

if (number5>number7)
number5=number7;

if (number5 number5=number8;

System.out.println( " the Max "+number1 ) ;
System.out.println( " the Min "+number5 ) ;

}
}

Lab Scanner

2006-03-13T20:00:00.000+08:00

import java.io.*;//9224205
public class Lab_Scanner
{
public static void main(String[] args) throws IOException {
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the number of pods follow by") ;
String inputString1 = keyboard.readLine();

System.out.println("the number of peas in a pod:") ;
String inputString2 = keyboard.readLine();
int numberOfPods = Integer.parseInt(inputString1);
int peasPerpod = Integer.parseInt(inputString2);
int totalNumberOfPeas = numberOfPods*peasPerpod;

System.out.print( numberOfPods+ " pods and ") ;
System.out.println(peasPerpod+ " peasPerpod") ;
System.out.println("The total number of peas = "+ totalNumberOfPeas) ;
}
}

Homework 03/06/2006

2006-03-12T22:20:00.000+08:00

package Java_hw4;
import javax.swing.*;
public class Java_hw4
{
public static void main(String[] args)
{
String myString=JOptionPane.showInputDialog("Enter a number: ");
int myNumber = Integer.parseInt(myString);
System.out.println("The number is "+ myNumber);
}
}

Lab0306

2006-03-06T20:17:00.000+08:00

Display1.7

//9224205
package Lab0306;

public class Lab0306
{
public static void main(String[] args)
{
String sentence = "I hate text processing!";
int position = sentence.indexOf("hate") ;
String ending =
sentence.substring(position+"hate".length() );
System.out.println("01234567890123456789012");
System.out.println(sentence);
System.out.println("The word \"hate\" starts at index "+position);
sentence = sentence.substring(0,position)+"adore"+ending ;
System.out.println("The change string is:");
System.out.println(sentence);
}
}

----
Project1.5

package Lab0306;

public class Lab0306_2 {
public static void main(String[] args) {
String sentence = "I hate you!";
int position = sentence.indexOf("hate") ;
String ending =
sentence.substring(position+"hate".length() );
System.out.println(sentence);
System.out.println("The word \"hate\" starts at index "+position);
sentence = sentence.substring(0,position)+"love"+ending ;
System.out.println("The change string is:");
System.out.println(sentence);
}
}

JAVA Homework3

2006-03-02T23:08:00.001+08:00

public class Homework3 {

public static void main(String[] args) {
//9224205
double personWeight = 150 / 2.2;
double runnung6MPH = 10; // 10 metabolic equivalents
double basketball = 8 ; // 8 metabolic equivalents
double sleeping = 1 ; // 1 metabolic equivalents
double runninh30Min=0.0175*runnung6MPH *personWeight*30;
double basketball30Min=0.0175*basketball *personWeight*30;
double sleeping6Hour=0.0175*sleeping *personWeight*360;

double totalNumberOfCalories = runninh30Min+basketball30Min+sleeping6Hour;
System.out.println("The Number Of running Calories"+runninh30Min+"Calories");
System.out.println("The Number Of basketball Calories"+basketball30Min+"Calories");
System.out.println("The Number Of sleeping Calories"+sleeping6Hour+"Calories");
System.out.println("Total Number Of Calories"+totalNumberOfCalories+"Calories");
}
}

JAVA Lab2

2006-02-27T21:04:00.000+08:00

public class Lab0227 {

public static void main(String[] args) {
double sweetWeight=0; //代糖的重量
double dietSoda=350; //一罐代糖汽水的重量
double theAmountOfSweetToKillMouse=0.01; //可使老鼠致命的代糖重
double theWeightOfMouuse=200;//老鼠體重(g)
double weightOfDieter=60000;//人的體重(g)
double desiredWeightOfDieter=50000;//人所希望能減到的重量(g)
double thePercentageToKillMouse;// 老鼠所吃代糖與體重比
double thePercentageToKillPeople;// 人所吃代糖與體重比
sweetWeight = dietSoda*0.1*0.01;
// 老鼠所吃代糖與體重比 = 可使老鼠致命的代糖重量/老鼠體重
thePercentageToKillMouse = theAmountOfSweetToKillMouse/theWeightOfMouuse ;
// 人所吃代糖與體重比 = 代糖的重量 / 人所希望能減到的重量
thePercentageToKillPeople = sweetWeight/desiredWeightOfDieter;
//判斷式
sweetWeight = thePercentageToKillMouse *desiredWeightOfDieter;
dietSoda = sweetWeight /0.001;
if (thePercentageToKillMouse==thePercentageToKillPeople)

System.out.println("Danger");
else
System.out.println("Save"+" "+dietSoda+"g");

}
}

Java Homework2

2006-02-26T13:35:00.000+08:00

1. Explain bytecode, JVM

Byte-Code 位元碼、中間碼
The java compiler translates your java program in to a language
called byte-code, which is the machine language for a fictitious
computer. It is easy to translatethis byte-code into the machine
language of any particular computer. Each type of computer will
have its own interpareter that translates and excutes byte-code
instruction.

JAVA編譯器（JAVAC）可將JAVA程式轉譯成中間碼（BYTE-CODE）
-JAVA直譯器可以瞭解的語言。如果程式編譯正確，編譯器會產生
一個副檔名為.CLASS的檔案。JAVA並不直接編譯為與平台相依的
原始機器指令，而是編譯為與系統無關的「位元碼、中間碼」
（bytecodes）。

JVM Java Virtual Machine JAVA虛擬機器
THE java interpreter is also caled the Java Virtual
Machine. JAVA為了能達到真正跨平台，於是JAVA在設計上便有
了JVM的產生。一般的程式語言，程式設計師寫出來的稱為原始碼
(Source Code)，要編譯(Compile)成機器碼(Machine Code)才
能執行。但Java的情況不同，Source Code編譯過的結果是
Byte Code，機器或是OS是看不懂的，要靠JVM在執行時解譯為
Machine Code，才能執行。也就是說，對一般程式而言，程式本
身直接就接觸到OS或硬體資源層級，因此每遇到一種平臺，設計師
就必須針對不同的平臺做出適當的設計，但Java則不然，程式本身
面對的是JVM，只要JVM看得懂你寫的程式，它就能順利執行。

2.Explain class, object 類別與物件

Java has two modules- methodd and classes.

類別是把事物的資料與相關的功能封在一起，形成的一種殊結構，
用以表達真實世界的一種抽象概念。一般來說類別是由「資料成員
」與「函數成員」封裝而成的，Java把資料成員稱為field（範疇
），函數成員稱為method。

物件利用類別來封裝（encapsulate）資料(attributes)和方法
(behaviors).

舉例來說：把class當作一棟房子的藍圖，其中包含房子的各種資料
與方法，而根據藍圖做出來的房子稱為物件。

資料來源 :
1.Walter Savitch, Absolute Java ,2/e, Addison Wesley, 04/08/2005
2.H.M Deitel & P.J Deitel ,JAVA HOW TO PROGRAM,5/e, Prentice Hall
3.http://www.eland.com.tw/javaland/2002_04/javatech_jvm.htm
4.http://caterpillar.onlyfun.net/Gossip/index.html

3. Let i=2;
Print i;
Print 2 * (i++);
Print i;

Ans: 2, 4, 3
--
public class Test2 {

public static void main(String[] args) {
int i=2;
System.out.println(i);
i = 2 * (i++);
System.out.println(i);
System.out.println(i-1);
}
}

--
4. Let i=2;
Print i;
Print 2 * (++i);
Print i;

Ans: 2, 6, 3
--
public class Test2 {

public static void main(String[] args) {
int i=2;
System.out.println(i);
i = 2 * (++i);
System.out.println(i);
System.out.println(i-3);
}
}

--
5. Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;

Ans: 3.5, 3.5
--
public class Test2 {

public static void main(String[] args) {
double m=7,n=2;
double a ;
a = m / n;
System.out.println(a);
System.out.println(a);
}
}

--

JAVA作業一

2006-02-22T21:21:00.000+08:00

package firstprogram;

public class Firstprogram {

public static void main(String[] args) {
System.out.println("Hello reader.");
System.out.println("Welcome to JAVA.");
System.out.println("Let's demonstrate a simple calculation.");

int answer;
answer=2+2;
System.out.println("2 plus 2 is "+answer);
}
}

程式結果
Hello reader.

Welcome to JAVA.

Let's demonstrate a simple calculation.

2 plus 2 is 4

晚兩週才加選

2006-02-22T11:21:00.000+08:00

老師，我這禮拜才加選（2/20），我會在這週把前兩次作業補齊。請老師補閱。