face.java

编写的一个简单的计算器小程序

package face;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Face extends JFrame{
	JTextField text,textM;
	JButton bBack,bCe,bC;
	JButton bMc,b7,b8,b9,bDiv,bSqrt;
	JButton bMr,b4,b5,b6,bMul,bPen;
	JButton bMs,b1,b2,b3,bSub,bRec;
	JButton bMa,b0,bNeg,bPnt,bAdd,bEql;

	Face(String s){
		super(s);
		this.setVisible(true);
		this.setLayout(new BorderLayout(3,1));

		JPanel pan1=new JPanel();
		JPanel pan2=new JPanel();
		JPanel pan3=new JPanel();

		this.add(pan1,"North");
		this.add(pan2,"Center");
		this.add(pan3,"South");

		pan1.setLayout(new GridLayout(1,1));
		pan2.setLayout(new GridLayout(1,4));
		pan3.setLayout(new GridLayout(4,6));

		pan1.add(text=new JTextField("0.",24));
		text.setHorizontalAlignment(JTextField.RIGHT);

		pan2.add(textM=new JTextField(4));
		pan2.add(bBack=new JButton("Backspace"));
		pan2.add(bCe=new JButton("    CE    "));
		pan2.add(bC=new JButton("    C    "));

		pan3.add(bMc=new JButton(" MC "));
		pan3.add(b7=new JButton("  7  "));
		pan3.add(b8=new JButton("  8  "));
		pan3.add(b9=new JButton("  9  "));
		pan3.add(bDiv=new JButton("  /  "));
		pan3.add(bSqrt=new JButton("sqrt"));
		pan3.add(bMr=new JButton(" MR "));
		pan3.add(b4=new JButton("  4  "));
		pan3.add(b5=new JButton("  5  "));
		pan3.add(b6=new JButton("  6  "));
		pan3.add(bMul=new JButton("  *  "));
		pan3.add(bPen=new JButton("  %  "));
		pan3.add(bMs=new JButton(" MS "));
		pan3.add(b1=new JButton("  1  "));
		pan3.add(b2=new JButton("  2  "));
		pan3.add(b3=new JButton("  3  "));
		pan3.add(bSub=new JButton("  -  "));
		pan3.add(bRec=new JButton(" 1/x "));
		pan3.add(bMa=new JButton(" M+ "));
		pan3.add(b0=new JButton("  0  "));
		pan3.add(bNeg=new JButton(" +/- "));
		pan3.add(bPnt=new JButton("  .  "));
		pan3.add(bAdd=new JButton("  +  "));
		pan3.add(bEql=new JButton("  =  "));
		
		this.pack();
	}
}