calui.java

这是一个关于java面板的程序样例

package frame;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
public class CalUI extends JFrame{
	JTextField  txtNumber=new JTextField(10);
	CalModel model;
	public CalUI(String title) {
		super(title);
		model=new CalModel();
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.add(txtNumber, BorderLayout.NORTH);
		ininMenu();
		ininButton();
		this.pack();
		}	
private void ininButton(){
	JPanel cpane=new JPanel( new GridLayout(4,6));
	ActionListener listener=new CalListener(this,this.model);
	JButton a1=new JButton("MC");
	a1.addActionListener(listener);
	JButton a2=new JButton("7");        
	a2.addActionListener(listener);
	JButton a3=new JButton("8");
	a3.addActionListener(listener);
	JButton a4=new JButton("9");
	JButton a5=new JButton("/");
	JButton a6=new JButton("sqrt");
	JButton a7=new JButton("MR");
	JButton a8=new JButton("4");
	JButton a9=new JButton("5");
	JButton a10=new JButton("6");
	JButton a11=new JButton("*");
	JButton a12=new JButton("%");
	JButton a13=new JButton("MS");
	JButton a14=new JButton("1");
	JButton a15=new JButton("2");
	JButton a16=new JButton("3");
	JButton a17=new JButton("-");
	JButton a18=new JButton("1/X");
	JButton a19=new JButton("M+");
	JButton a20=new JButton("0");
	JButton a21=new JButton("+/-");
	JButton a22=new JButton(".");
	JButton a23=new JButton("+");
	a23.addActionListener(listener);
	JButton a24=new JButton("=");
	a24.addActionListener(listener);
	cpane.add(a1);
	cpane.add(a2);
	cpane.add(a3);
	cpane.add(a4);
	cpane.add(a5);
	cpane.add(a6);
	cpane.add(a7);
	cpane.add(a8);
	cpane.add(a9);
	cpane.add(a10);
	cpane.add(a11);
	cpane.add(a12);
	cpane.add(a13);
	cpane.add(a14);
	cpane.add(a15);
	cpane.add(a16);
	cpane.add(a17);
	cpane.add(a18);
	cpane.add(a19);
	cpane.add(a20);
	cpane.add(a21);
	cpane.add(a22);
	cpane.add(a23);
	cpane.add(a24);

	this.add(cpane, BorderLayout.CENTER);
	}
private void ininMenu(){
	JMenuBar mb = new JMenuBar();

	JMenu mb1 = new JMenu("编辑(E)");
	JMenu mb2 = new JMenu("查看(V)");
	JMenu mb3= new JMenu("帮助(H)");
    mb.add(mb1);
    mb.add(mb2);
    mb.add(mb3);
	setJMenuBar(mb);

}

public double getTxtNumber() {
	return Double.parseDouble(txtNumber.getText());
}
public void clearTxt(){
	this.txtNumber.setText("");
}
public void setTxtNumber(double txtNumber) {
	StringBuffer sbf=new StringBuffer(this.txtNumber.getText());
	sbf.append(txtNumber);
	this.txtNumber.setText(sbf.toString());
}
public void setTxtNumber(String txtNumber) {
	StringBuffer sbf=new StringBuffer(this.txtNumber.getText());
	sbf.append(txtNumber);
	this.txtNumber.setText(sbf.toString());
}
public static void main(String[] args) {
		javax.swing.SwingUtilities.invokeLater(
				   new Runnable() {
				      public void run() {

				    	  CalUI app=new CalUI("计算器");
			         app.setVisible(true);}
			         
				   

	});
}
}