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java的计算器源代码话题已于 2025-08-11 07:15:40 更新
package edu.hpu.yyf;import java.awt.*;import java.awt.event.*;public class MyCalculator { private static double d1 = 0.0;private static double d2 = 0.0;private static String s1 = new String("0");private static String s2 = new String("0");private static char c1 ='0'...
private String lastOp; //记录前一个运算符 private String strVal; //字符化的计算数值 private double number; //新输入或临时存放数值 private double total; //记录计算数值 private boolean opPressed; //判断operator是否按下 private double numStack[]; //数字堆栈 private String operStack[]; //符号堆...
import java.awt.event.ActionEvent;import java.awt.event.ActionListener public class NewJFrame extends javax.swing.JFrame { public NewJFrame() { initComponents();} private void initComponents() { jPanel1 = new javax.swing.JPanel();jLabel1 = new javax.swing.JLabel();jLabel2 = ...
import java.awt.*;import java.awt.event.*;import java.lang.*;import javax.swing.*;public class Counter extends Frame { //声明三个面板的布局 GridLayout gl1,gl2,gl3;Panel p0,p1,p2,p3;JTextField tf1;TextField tf2;Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b...
f=new JFrame("计算器");p=new Panel();//运算界面p p.setLayout(new GridLayout(4,4)); // 设置p的布局为GridLayout,四行四列 tf=new TextField(30);//实例化按钮 b1=new Button("7");b2=new Button("8");b3=new Button("9");b4=new Button("+");b5=new Button("4");b6...
import java.awt.event.ActionListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JTextField;class Stack_Float { float nums[];int top;Stack_Float(){ nums = new float[50];top = -1;} boolean IsEmpty(){ if (top == -1)return true;else return false...
JFrame frame=new JFrame("sunshine---计算器");JTextField jg_TextField=new JTextField(jg,20);//20列 JButton clear_Button=new JButton("清除");JButton button0=new JButton("0");JButton button1=new JButton("1");JButton button2=new JButton("2");JButton button3=new JButton...
//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"...
f=new Frame("计算器");p=new Panel();p.setLayout(new GridLayout(4,4));tf=new TextField(30);b1=new Button("7");b2=new Button("8");b3=new Button("9");b4=new Button("+");b5=new Button("4");b6=new Button("5");b7=new Button("6");b8=new Button("-");b9=...
f=new Frame("计算器");p=new Panel();p.setLayout(new GridLayout(4,4));tf=new TextField(30);b1=new Button("7");b2=new Button("8");b3=new Button("9");b4=new Button("+");b5=new Button("4");b6=new Button("5");b7=new Button("6");b8=new Button("-");b9=...