计算器
2015/4/29 18:52:47 焉zhi寐..suo巄舚彳 2015/4/29 18:52:47
对方已成功接收了您发送的离线文件“git命令.txt”(1.83KB)。 16:55:46 刘亚楠 2015/5/17 16:55:46
package com.main; import java.awt.Button; import java.awt.Frame; import java.awt.GridLayout; import java.awt.Panel; import java.awt.TextField; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class Calculator extends WindowAdapter implements ActionListener { private double result = 0, data1 = 0, radixPointDepth = 1; private boolean radixPointIndicate = false, resultIndicate = false; private char prec = '+'; private Frame f;//整个框架 private TextField tf;//文本域 private Button b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15, b16, b17;//一些按钮 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(); p.setLayout(new GridLayout(4, 4));//布局 tf = new TextField(30);//30个字符 b1 = new Button("7");//添加按钮，下同 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 = new Button("1"); b10 = new Button("2"); b11 = new Button("3"); b12 = new Button("*"); b13 = new Button("0"); b14 = new Button("."); b15 = new Button("="); b16 = new Button("/"); b17 = new Button("清零"); f.add(tf, "North"); f.add(p, "Center"); f.add(b17, "South"); p.add(b1); p.add(b2); p.add(b3); p.add(b4); p.add(b5); p.add(b6); p.add(b7); p.add(b8); p.add(b9); p.add(b10); p.add(b11); p.add(b12); p.add(b13); p.add(b14); p.add(b15); p.add(b16); b1.addActionListener(this);//添加事件，下同 b2.addActionListener(this); b3.addActionListener(this); b4.addActionListener(this); b5.addActionListener(this); b6.addActionListener(this); b7.addActionListener(this); b8.addActionListener(this); b9.addActionListener(this); b10.addActionListener(this); b11.addActionListener(this); b12.addActionListener(this); b13.addActionListener(this); b14.addActionListener(this); b15.addActionListener(this); b16.addActionListener(this); b17.addActionListener(this); f.addWindowListener(this); f.setSize(250, 190); f.setVisible(true); }
public void actionPerformed(ActionEvent e) {//事件触发 String s; s = e.getActionCommand(); switch (s.charAt(0)) {//得到字符 case '0'://如果是数字 case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': if (resultIndicate) { result = 0; data1 = 0; prec = '+'; } Integer Int1 = new Integer(s); if (radixPointIndicate) { radixPointDepth = radixPointDepth / 10; data1 = data1 + (Int1.intValue()) * radixPointDepth; } else { data1 = data1 * 10 + (Int1.intValue()); } Double displayNumber = new Double(data1); tf.setText(displayNumber.toString()); resultIndicate = false; break; case '+'://如果是符号 case '-': case '*': case '/': case '=': if (s.charAt(0) != '=' && resultIndicate) { prec = s.charAt(0); resultIndicate = false; } else { switch (prec) { case '+': result = result + data1; break; case '-': result = result - data1; break; case '*': result = result * data1; break; case '/': result = result / data1; break; } } radixPointIndicate = false; radixPointDepth = 1; displayNumber = new Double(result); tf.setText(displayNumber.toString()); if (s.charAt(0) != '=') { data1 = 0; prec = s.charAt(0); } else { resultIndicate = true; } break; case '.': radixPointIndicate = true; break; } if (s.equals("清零")) {//如果是清零 result = 0; data1 = 0; radixPointDepth = 1; tf.setText(""); } }
public void windowClosing(WindowEvent e) { System.exit(0); } }
对方已成功接收了您发送的离线文件“git命令.txt”(1.83KB)。 16:55:46 刘亚楠 2015/5/17 16:55:46
package com.main; import java.awt.Button; import java.awt.Frame; import java.awt.GridLayout; import java.awt.Panel; import java.awt.TextField; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class Calculator extends WindowAdapter implements ActionListener { private double result = 0, data1 = 0, radixPointDepth = 1; private boolean radixPointIndicate = false, resultIndicate = false; private char prec = '+'; private Frame f;//整个框架 private TextField tf;//文本域 private Button b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15, b16, b17;//一些按钮 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(); p.setLayout(new GridLayout(4, 4));//布局 tf = new TextField(30);//30个字符 b1 = new Button("7");//添加按钮，下同 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 = new Button("1"); b10 = new Button("2"); b11 = new Button("3"); b12 = new Button("*"); b13 = new Button("0"); b14 = new Button("."); b15 = new Button("="); b16 = new Button("/"); b17 = new Button("清零"); f.add(tf, "North"); f.add(p, "Center"); f.add(b17, "South"); p.add(b1); p.add(b2); p.add(b3); p.add(b4); p.add(b5); p.add(b6); p.add(b7); p.add(b8); p.add(b9); p.add(b10); p.add(b11); p.add(b12); p.add(b13); p.add(b14); p.add(b15); p.add(b16); b1.addActionListener(this);//添加事件，下同 b2.addActionListener(this); b3.addActionListener(this); b4.addActionListener(this); b5.addActionListener(this); b6.addActionListener(this); b7.addActionListener(this); b8.addActionListener(this); b9.addActionListener(this); b10.addActionListener(this); b11.addActionListener(this); b12.addActionListener(this); b13.addActionListener(this); b14.addActionListener(this); b15.addActionListener(this); b16.addActionListener(this); b17.addActionListener(this); f.addWindowListener(this); f.setSize(250, 190); f.setVisible(true); }
public void actionPerformed(ActionEvent e) {//事件触发 String s; s = e.getActionCommand(); switch (s.charAt(0)) {//得到字符 case '0'://如果是数字 case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': if (resultIndicate) { result = 0; data1 = 0; prec = '+'; } Integer Int1 = new Integer(s); if (radixPointIndicate) { radixPointDepth = radixPointDepth / 10; data1 = data1 + (Int1.intValue()) * radixPointDepth; } else { data1 = data1 * 10 + (Int1.intValue()); } Double displayNumber = new Double(data1); tf.setText(displayNumber.toString()); resultIndicate = false; break; case '+'://如果是符号 case '-': case '*': case '/': case '=': if (s.charAt(0) != '=' && resultIndicate) { prec = s.charAt(0); resultIndicate = false; } else { switch (prec) { case '+': result = result + data1; break; case '-': result = result - data1; break; case '*': result = result * data1; break; case '/': result = result / data1; break; } } radixPointIndicate = false; radixPointDepth = 1; displayNumber = new Double(result); tf.setText(displayNumber.toString()); if (s.charAt(0) != '=') { data1 = 0; prec = s.charAt(0); } else { resultIndicate = true; } break; case '.': radixPointIndicate = true; break; } if (s.equals("清零")) {//如果是清零 result = 0; data1 = 0; radixPointDepth = 1; tf.setText(""); } }
public void windowClosing(WindowEvent e) { System.exit(0); } }
运行截图
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