//计算器数字按钮定义面板 class Number_Key extends JPanel { JButton zero = new JButton("0");//数字键0 JButton one = new JButton("1");//数字键1 JButton two = new JButton("2");//数字键2 JButton three = new JButton("3");//数字键3 JButton four = new JButton("4"...
按钮b1,数字1的按钮JButton b1=new JButton("1");文本框JTextField jtp=new JTextField();b1.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ jtp.setText("1");} });b.addActionListener(this);//按钮b添加事件监听器 addWindowListener(new WindowAdapter(...
import javax.swing.*;import java.awt.*;import java.awt.event.*;public class Calculator implements ActionListener { String s="",s1;double d1,d2;JFrame jf = new JFrame("小计算器by Graduate") ;JTextField tf = new JTextField();public void init()//实现计算器界面 { Container c...
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);jPanel1.setLayout(jPanel1Layout);jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(jPanel1Layout.createSequentialGroup().addGap(53, 53, 53).ad...
import javax.swing.*;import java.awt.event.*;class Counter extends WindowAdapter { static JFrame f=new JFrame("计算器");static JTextField text1=new JTextField("0.");static String source="";static String cal="";static String object="";static boolean flag=false;static boolean ...
case '/':if(d2==0) {text.setText("0");d1=0;break;}s2 = String.valueOf(d1/d2);d1=d1/d2;d2=0;text.setText(s2);s2="0";break;} } public static void main(String [] args){ Frame cclt = new Frame("我的计算器");cclt.setBounds(300,150,300,265);cclt....
java计算器源程序java计算器import java.awt.*; import javax.swing.*; import java.awt.event.*; class calculation extends JFrame {public calculation() /*构造方法*/ {super("计数器"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); initTextPanel(); /*文本框*/ initControlPanel(); ...
//注册事件监听器 } public void actionPerformed(ActionEvent e){ //实现接口方法 double number1=Double.parseDouble(t1.getText());double number2=Double.parseDouble(t2.getText());//得到文本域中的数字字符串调用parseDouble（）函数转化为数值型数字 if(e.getSource()==b1){ double ...
private Frame f;private TextField tf;private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15,b16,b17;private Panel p;static public void main(String args[]){ Calculator de=new Calculator();de.go();} public void go(){ f=new Frame("计算器");p=new Panel()...