1.javaС?小程序编?????Դ??
2.å¦ä½ç¨JAVAè¯è¨ç¼å计ç®å¨å°ç¨åºï¼
3.求java经典小程序代码
javaС??????Դ??
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
@SuppressWarnings("serial")
public class Test extends JFrame {
private JPanel jp = new JPanel();
private JButton jb = new JButton("按钮一");
private JButton jb = new JButton("按钮二");
private JButton jb = new JButton("按钮三");
private JButton[] jb = new JButton[] { jb, jb, jb };
private JLabel jl = new JLabel("请单击按钮！");
private int count = 0;
public Test() {
for (int i = 0; i < jb.length; i++) {
jp.add(jb[i]);
}
jp.add(jl);
this.add(jp);
this.setTitle("点按钮，程源程序石墨烯源码记录单击按钮的编程同花顺涨跌停指标公式源码次数和名字！");
jb.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Test.this.jl.setText(jl.getText());
}
});
for (int i = 0; i < jb.length; i++) {
jb[i].addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (e.getSource() == jb) {
Test.this.jl.setText("您单击的源码溯源码查询平台是否可信是按钮一，您总共单机了" + (++count)
+ "次按钮");
} else if (e.getSource() == jb) {
Test.this.jl.setText("您单击的小程序编乾坤系统主图指标源码是按钮二，您总共单机了" + (++count)
+ "次按钮");
} else if (e.getSource() == jb) {
Test.this.jl.setText("您单击的程源程序合成游戏源码交易平台是按钮三，您总共单机了" + (++count)
+ "次按钮");
}
}
});
this.setBounds(,编程 , , );
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
public static void main(String[] args) {
new Test();
}
}
å¦ä½ç¨JAVAè¯è¨ç¼å计ç®å¨å°ç¨åºï¼
å ·ä½ä»£ç å¦ä¸ï¼import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Calculator extends JFrame implements ActionListener {
private JFrame jf;
private JButton[] allButtons;
private JButton clearButton;
private JTextField jtf;
public Calculator() {
//对å¾å½¢ç»ä»¶å®ä¾å
jf=new JFrame("ä»»éç计ç®å¨1.0ï¼JAVAç");
jf.addWindowListener(new WindowAdapter(){
public void windowClosing(){
System.exit(0);
}
});
allButtons=new JButton[];
clearButton=new JButton("æ¸ é¤");
jtf=new JTextField();
jtf.setEditable(false);
String str="+-*0.=/";
for(int i=0;i<allButtons.length;i++){
allButtons[i]=new JButton(str.substring(i,i+1));
}
}
public void init(){
//å®æå¸å±
jf.setLayout(new BorderLayout());
JPanel northPanel=new JPanel();
JPanel centerPanel=new JPanel();
JPanel southPanel=new JPanel();
northPanel.setLayout(new FlowLayout());
centerPanel.setLayout(new GridLayout(4,4));
southPanel.setLayout(new FlowLayout());
northPanel.add(jtf);
for(int i=0;i<;i++){
centerPanel.add(allButtons[i]);
}
southPanel.add(clearButton);
jf.add(northPanel,BorderLayout.NORTH);
jf.add(centerPanel,BorderLayout.CENTER);
jf.add(southPanel,BorderLayout.SOUTH);
addEventHandler();
}
//æ·»å äºä»¶çå¬
public void addEventHandler(){
jtf.addActionListener(this);
for(int i=0;i<allButtons.length;i++){
allButtons[i].addActionListener(this);
}
clearButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Calculator.this.jtf.setText("");
}
});
}
//äºä»¶å¤ç
public void actionPerformed(ActionEvent e) {
//å¨è¿éå®æäºä»¶å¤ç 使计ç®å¨å¯ä»¥è¿è¡
String action=e.getActionCommand();
if(action=="+"||action=="-"||action=="*"||action=="/"){
}
}
public void setFontAndColor(){
Font f=new Font("å®ä½",Font.BOLD,);
jtf.setFont(f);
jtf.setBackground(new Color(0x8f,0xa0,0xfb));
for(int i=0;i<;i++){
allButtons[i].setFont(f);
allButtons[i].setForeground(Color.RED);
}
}
public void showMe(){
init();
setFontAndColor();
jf.pack();
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args){
new Calculator().showMe();
}
}
求java经典小程序代码
代码如下：public class HelloWorld {
public static void main(String []args) {
int a = 3, b = 7 ;
System.out.println("Hello World!");
}
public static int f(int a, int b){
return a*a + a*b + b*b;
}
}
结果如下：
