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1.×î¼òµ¥µÄͼÐΣ¬Ò»¸öÏûÏ¢¿ò
import javax.swing.JOptionPane;
//±íÃ÷³ÌÐòʹÓÃjavax.swing°üµÄJOptionPaneÀà
public class Dialog1{

public static void main(String[] args) {
// TODO Auto-generated method stub
       //Ͼä±íÃ÷³ÌÐòʹÓÃJOptionPaneÀàµÄshowMessageDialog·½·¨1`
JOptionPane.showMessageDialog(null,"welcome to java");
 }
 
 }
2.ÈÔÈ»ÊǼòµ¥µÄÏûÏ¢¿ò£¬ÊäÈëÃû×ÖºóÏÔʾ»¶Ó­ÏûÏ¢
import javax.swing.JOptionPane;
public class NameDialog{
/**
 * @param args
 */
public static void main(String[] args) {
// TODO Auto-generated method stub
String name=
JOptionPane.showInputDialog("what is your name? ");
String message=
String.format("welcome,%s,to java programming! ",name);
JOptionPane.showMessageDialog(null,message);
 }
 
 }
3.ÒÔÉÏÁ½¸öÀý×ÓµÄÔËÓã¬Á½¸öÕûÊýºÍµÄÊä³ö£¬×¢ÒâInteger.parseInt()ÓÃÓÚ½«×Ö·û´®×ª»¯ÎªÕûÊý
import javax.swing.JOptionPane;
public class ShowAdd{

public static void main(String[] args) {
// TODO Auto-generated method stub
   int integer1;
   int integer2;
String firstNumber=
JOptionPane.showInputDialog("ÇëÊäÈëµÚÒ»¸öÕûÊý£º ");
String secondNumber=
JOptionPane.showInputDialog("ÇëÊäÈëµÚ¶þ¸öÕûÊý£º ");
integer1=Integer.parseInt(firstNumber);
integer2=Integer.parseInt(secondNumber);
String Sum=
String.format("%dºÍ%dµÄºÍΪ£º%d ",integer1,integer2,integer1+integer2);
JOptionPane.showMessageDialog(null,Sum);
 }
 
 }

3.ÔÚ¿òÀïÃæ³öÏÖÁ½Ìõ¶Ô½ÇÖ±Ïß
import java.awt.*;
import javax.swing.*;
public class DrawPanel extends JPanel
{
  


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public class javaTest {
public static void test(String ...strings){
for(String str: strings){
System.out.print(str + " ");
}
System.out.println();
}

public static void main(String[] args){
test("a", "b", "c", "ddd");
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package reflect;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Test {
 public static void main(String[] args) {
  try {
   Class c = Class.forName("reflect.Student");// ¸ù¾ÝÀàµÄÍêÕûÀàÃû´´½¨ÀàÏó
    ......

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<bean id="dataSource"
       class="org.apache.commons.dbcp.BasicDataSource ......
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