快捷键设置,简易计算器

IDEA设置Ctrl+滚轮调整字体大小（转载）

 

package com.lym;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

//简易计算器
public class TsetCalc {
    public static void main(String[] args) {
        new Calculator();
    }
}

//计算器类
class Calculator extends Frame{
    public Calculator(){
    //3个文本框
    TextField num1 = new TextField(10);//字符数
    TextField num2 = new TextField(10);//字符数
    TextField num3 = new TextField(20);//字符数

    //1个按钮
    Button button = new Button("=");
    button.addActionListener(new MyCalulatorListener(num1,num2,num3));

    //1个标签
    Label label = new Label("+");

    //布局
    setLayout(new FlowLayout());
    add(num1);
    add(label);
    add(num2);
    add(button);
    add(num3);

    pack();
    setVisible(true);
}}

//监听器类
class MyCalulatorListener implements ActionListener{
     //获取三个变量
    private TextField num1,num2,num3;


    public MyCalulatorListener(TextField num1,TextField num2,TextField num3) {
        this.num1 = num1;
        this.num2 = num2;
        this.num3 = num3;
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        //1.获得加数和被加数
        int n1 = Integer.parseInt(num1.getText());
        int n2 = Integer.parseInt(num2.getText());
        //2.将这个值+法运算后，放到第三个框
        num3.setText(""+(n1+n2));

        //3.清楚前两个框
        num1.setText("");
        num2.setText("");
    }
}

　　

按Ctrl+Shift+A，出现搜索框输入mouse: