2015.04.10- 4種按鈕範例

2015.04.10
1. Button

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Test
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);
JButton  jbnButton1 = new JButton("Button 1");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("chia-ning hsu");
}
}

2.9個按鈕

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class TEST
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);
JButton  jbnButton1 = new JButton("Button 1");
JButton  jbnButton2 = new JButton("Button 2");
JButton  jbnButton3 = new JButton("Button 3");
JButton  jbnButton4 = new JButton("Button 4");
JButton  jbnButton5 = new JButton("Button 5");
JButton  jbnButton6 = new JButton("Button 6");
JButton  jbnButton7 = new JButton("Button 7");
JButton  jbnButton8 = new JButton("Button 8");
JButton  jbnButton9 = new JButton("Button 9");
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jplPanel.add(jbnButton2);
jplPanel.add(jbnButton3);
jplPanel.add(jbnButton4);
jplPanel.add(jbnButton5);
jplPanel.add(jbnButton6);
jplPanel.add(jbnButton7);
jplPanel.add(jbnButton8);
jplPanel.add(jbnButton9);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("chia-ning hsu");
}

}


3.9個按鈕顯示數字

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class TEST
{


public static void main(String[] args)
{
JFrame jtfMainFrame = new JFrame("Which Button Demo");
jtfMainFrame.setSize(450, 150);

JButton  jbnButton1 = new JButton("1");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("1");
}
});


JButton  jbnButton2 = new JButton("2");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("2");
}
});


JButton  jbnButton3 = new JButton("3");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("3");
}
});


JButton  jbnButton4 = new JButton("4");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("4");
}
});


JButton  jbnButton5 = new JButton("5");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("5");
}
});
JButton  jbnButton6 = new JButton("6");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("6");
}
});
JButton  jbnButton7 = new JButton("7");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("7");
}
});
JButton  jbnButton8 = new JButton("8");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("8");
}
});
JButton  jbnButton9 = new JButton("9");
jbnButton1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
System.out.println("9");
}
});
JPanel jplPanel = new JPanel();
jplPanel.add(jbnButton1);
jplPanel.add(jbnButton2);
jplPanel.add(jbnButton3);
jplPanel.add(jbnButton4);
jplPanel.add(jbnButton5);
jplPanel.add(jbnButton6);
jplPanel.add(jbnButton7);
jplPanel.add(jbnButton8);
jplPanel.add(jbnButton9);
jtfMainFrame.getContentPane().add(jplPanel, BorderLayout.CENTER);
jtfMainFrame.setVisible(true);
System.out.print("chia-ning hsu");
}

}

4.for loop

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calculator extends JFrame{
public static void main(String[]args){
JFrame window=new JFrame("Calculator");
JPanel jplPanel = new JPanel();
JButton button[]=new JButton[10];
for(int i=0;i<button.length;i++){
button[i] = new JButton();
button[i].setSize(50,50);
button[i].setText(Integer.toString(i+1));
jplPanel.add(button[i]);

}
window.getContentPane().add(jplPanel, BorderLayout.CENTER);
window.setSize(500,500);
window.setVisible(true);

}}