计算器小程序java.docx

1、计算器小程序javaimport java.awt.BorderLayout;import java.awt.Button;import java.awt.Color;import java.awt.Font;import java.awt.Frame;import java.awt.GridLayout;import java.awt.Panel;import java.awt.TextField;import java.awt.Window;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;impo

2、rt java.awt.event.WindowEvent;import java.awt.event.WindowListener;public class Exam1_1 extends Frame implements ActionListener, WindowListener TextField text; String a; String names=-,CE,C,cos,sin,7,8,9,/,sqrt,4,5,6,%,1,2,3,-,1/x,0,+/-,.,=; Button but=new Buttonnames.length; String ss=new String();

3、String s=new String(); StringBuffer sb=new StringBuffer(); Exam1_1() super(计算器); int i; text=new TextField(); Panel p=new Panel(); p.setLayout(new GridLayout(5,5,5,5); for(i=0;inames.length;i+) buti=new Button(namesi); buti.addActionListener(this); buti.setForeground(Color.red); p.add(buti); setSize

4、(300,300); Font f=new Font(楷体,Font.BOLD,25); setFont(f); setLayout(new BorderLayout(10,10); add(text,BorderLayout.NORTH); add(p,BorderLayout.CENTER); setVisible(true); addWindowListener(this); public void actionPerformed(ActionEvent arg0) ss=arg0.getActionCommand(); if(ss.equals(=1) a=s.split(,2);do

5、uble i1=Double.valueOf(a0).doubleValue(); double i2=Double.valueOf(a1).doubleValue();double i3=i1+i2; text.setText(String.valueOf(i3); else if(s.indexOf(-)=1) a=s.split(-,2);double j1=Double.valueOf(a0).doubleValue(); double j2=Double.valueOf(a1).doubleValue();double j3=j1-j2; text.setText(String.va

6、lueOf(j3); else if(s.indexOf()=1) a=s.split(,2);double i1=Double.valueOf(a0).doubleValue(); double i2=Double.valueOf(a1).doubleValue();double i3=i1*i2; text.setText(String.valueOf(i3); else if(s.indexOf(/)=1) a=s.split(/,2);double i1=Double.valueOf(a0).doubleValue(); double i2=Double.valueOf(a1).dou

7、bleValue();double i3=i1/i2; text.setText(String.valueOf(i3); else if(s.indexOf(%)=1) a=s.split(%,2);double i1=Double.valueOf(a0).doubleValue(); double i2=Double.valueOf(a1).doubleValue();double i3=i1%i2; text.setText(String.valueOf(i3); public void windowActivated(WindowEvent arg0) / TODO Auto-gener

8、ated method stub public void windowClosed(WindowEvent arg0) / TODO Auto-generated method stub public void windowClosing(WindowEvent arg0) Window w=(Window)arg0.getSource(); w.setVisible(false); w.dispose(); public void windowDeactivated(WindowEvent arg0) / TODO Auto-generated method stub public void windowDeiconified(WindowEvent arg0) / TODO Auto-generated method stub public void windowIconified(WindowEvent arg0) / TODO Auto-generated method stub public void windowOpened(WindowEvent arg0) / TODO Auto-generated method stub