用Java编写一个程序

用java编写一个程序~

public class Test {
public static void main(String[] args) {
while (true) {
System.out.print("请输入姓名：");
Scanner input = new Scanner(System.in);
String name = input.next();
System.out.println("请输入的姓名是："+name);
}
}
}

public class Du1 {

public static void main(String[] args) {

int year = 2011;

if((year % 4 == 0 && year % 100 != 0) || (year % 4 == 0 && year % 100 == 0) ){
System.out.println("是闰年");
}else{
System.out.println("It is ");
}

}
}

package com.test;
import javax.swing.JFrame ;
import javax.swing.JList ;
import java.util.Vector ;
import javax.swing.BorderFactory ;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.ListSelectionModel ;
import javax.swing.JScrollPane ;
import javax.swing.AbstractListModel ;import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container ;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GridLayout ;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import javax.swing.event.ListSelectionListener ;
import javax.swing.event.ListSelectionEvent ;
class MyList extends JFrame implements ListSelectionListener,ActionListener{
private JFrame frame = new JFrame("Welcome To MLDN") ;
private Container cont = frame.getContentPane() ; // 得到窗体容器
private JList list1 = null ;
private MyPanel jp1=null;//画图形的面板
private JPanel jp2=null;//放JList
private JPanel jp3=null;//放按钮的面板
private JButton red=null;//红色按钮
private JButton green=null;//绿色按钮
public static Color c=Color.BLACK;
public static String shape=null;
public MyList(){
this.setLayout(new BorderLayout()) ; // 定义排版
this.list1 = new JList(new MyListModel()) ; this.list1.setBorder(BorderFactory.createTitledBorder("形状")) ; this.list1.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION) ;// 单选
//1
jp1=new MyPanel();
this.add(jp1,BorderLayout.CENTER);
//2
jp2=new JPanel();
jp2.add(list1) ;
this.add(jp2,BorderLayout.WEST);
//3
jp3=new JPanel();
red=new JButton("红色");
red.addActionListener(this);
green=new JButton("绿色");
green.addActionListener(this);
jp3.add(red);
jp3.add(green);
this.add(jp3,BorderLayout.SOUTH);
this.setSize(500,300) ;
this.setVisible(true) ;
this.list1.addListSelectionListener(this) ;

} public void valueChanged(ListSelectionEvent e){ // 事件处理
int temp[] = list1.getSelectedIndices() ;
for(int i=0;i<temp.length;i++){
String value=(String) list1.getModel().getElementAt(temp[i]);
if(value!=null){
shape=value;
this.repaint();
}
}

} @Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
Object o=arg0.getSource();
if(o==red){
c=Color.RED;
this.repaint();//重绘
}else if(o==green){
c=Color.GREEN;
this.repaint();
}
}}class MyListModel extends AbstractListModel{
private String shape[] = {"圆形","扇形","矩形"} ;
public Object getElementAt(int index){
if(index<this.shape.length){
return this.shape[index] ;
}else{
return null ;
}
}
public int getSize(){
return this.shape.length ;
}
}class MyPanel extends JPanel{
public void paint(Graphics g){
super.paint(g);
g.setColor(Color.CYAN);//背景颜色
g.fillRect(10,10, 400, 300);//背景区域
g.setColor( MyList.c);
String shape=MyList.shape;
if(shape==null){
g.drawRect(150, 50,130, 140);//初始图形
}else if("圆形".equals(shape)){
g.fillOval(100, 100, 60, 60);
}else if("扇形".equals(shape)){
g.fillArc(100, 50, 260, 260,10, 80);
}else if("矩形".equals(shape)){
g.fillRect(150, 50,130, 140);
}

}
}public class Test{
public static void main(String args[]){
new MyList() ;
}
} //程序运行结果
写得有点乱，希望对你有帮助。

package common;
public class Engumber {

private static final String[] LT20 = new String[]{
"zero", "one", "two", "three", "four",
"five", "six", "seven", "eight", "nine",
"ten", "eleven", "twelve","thirteen", "fourteen",
"fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
};
private static final String[] TNS = new String[]{
"twenty", "thirty", "forty", "fifty",
"sixty", "seventy", "eighty", "ninety"
};
private static final String[] THS = new String[]{
"hundred","thousand"
};
private static final String $ = " and ";

private static String lessThan20Converter(int num){
return LT20[num];
}

private static String from20To99Converter(int num){
int b = num;
int h = num/10;
return b==0 ? TNS[h-2] : TNS[h-2] "-" lessThan20Converter(b);
}
private static String moreThan99Converter(int num){
int high = num/100;
int low = num0;
int th = high/10;
int hu = high;

String ret = "";
if(th!=0){
ret = LT20[th] " " THS[1] " ";
}
ret = LT20[hu] " " THS[0] $ from20To99Converter(low);

return ret;
}

public static String convert(int num){
if(num<0 || num>9999){
throw new IllegalArgumentException(num " is not in [0,9999].");
}
String ret = null;
if(num<20){
ret = lessThan20Converter(num);
}else if(num>=20

---

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