JAVA编写计算器_java编写计算器资源-CSDN文库

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import java.awt.*;//导入AWT包 import java.awt.event.*;//导入事件处理包 import javax.swing.*; //继承一个类 public class Untitled1 extends Frame { //构造各种组件 TextField t = new TextField(" "); TextField tt = new TextField(" "); Label l = new Label(" 我的计算器"); Panel p = new Panel(); Panel p1 = new Panel(); Panel p2 = new Panel(); Panel p3 = new Panel(); Panel p4 = new Panel(); Panel p5 = new Panel(); Panel p6 = new Panel(); Button bbb = new Button("EXIT"); Button b0 = new Button("0"); Button b1 = new Button("1"); Button b2 = new Button("2"); Button b3 = new Button("3"); Button b4 = new Button("4"); Button b5 = new Button("5"); Button b6 = new Button("6"); Button b7 = new Button("7"); Button b8 = new Button("8"); Button b9 = new Button("9"); Button ba = new Button("+"); Button bb = new Button("-"); Button bc = new Button("*"); Button bd = new Button("/"); Button be = new Button("."); Button bg = new Button("sin"); Button bh = new Button("cos"); Button bi = new Button("tan"); Button bj = new Button("sqrt"); Button bk = new Button("CLEAR"); Button bl = new Button("exp"); Button bm = new Button("log"); Button bn = new Button("abs"); Button bf = new Button("="); //声明几个变量 String s1, s2, s3; double u1, u2, u3; char op; //设置各种方法参数 public Untitled1() { this.setTitle("我的计算器"); this.setLayout(new GridLayout(7, 1, 5, 5)); this.setBackground(Color.blue); t.setFont(new java.awt.Font("Dialog", 0, 30)); l.setFont(new java.awt.Font("Dialog", 0, 30)); tt.setFont(new java.awt.Font("Dialog", 0, 30)); //为按钮和面板添加底色 //添加面板 this.add(p); this.add(p1); this.add(p2); this.add(p3); this.add(p4); this.add(p5); this.add(p6); //设置面板 p.setLayout(new BorderLayout()); p.add(l); p1.setLayout(new BorderLayout()); p1.add(t); p2.setLayout(new GridLayout(1, 6, 5, 5)); p3.setLayout(new GridLayout(1, 6, 5, 5)); p4.setLayout(new GridLayout(1, 6, 5, 5)); p5.setLayout(new GridLayout(1, 6, 5, 5)); p6.setLayout(new GridLayout(1, 7, 5, 5)); //添加按钮 p2.add(b0); p2.add(b1); p2.add(b2); p2.add(b3); p2.add(bg); p2.add(bk); p3.add(b4); p3.add(b5); p3.add(b6); p3.add(b7); p3.add(bh); p3.add(bl); p4.add(b8); p4.add(b9); p4.add(ba); p4.add(bb); p4.add(bm); p4.add(bi); p5.add(bc); p5.add(bd); p5.add(be); p5.add(bf); p5.add(bj); p5.add(bn); p6.add(bbb); //添加各种监听器 b0.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "0"; t.setText(s); } }); b1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "1"; t.setText(s); } }); b2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "2"; t.setText(s); } }); b3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "3"; t.setText(s); } }); b4.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "4"; t.setText(s); } }); b5.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "5"; t.setText(s); } }); b6.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "6"; t.setText(s); } }); b7.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "7"; t.setText(s); } }); b8.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "8"; t.setText(s); } }); b9.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "9"; t.setText(s); } }); bg.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b *= Math.PI / 180; b = Math.sin(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bh.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b *= Math.PI / 180; b = Math.cos(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bi.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b *= Math.PI / 180; b = Math.tan(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bl.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b = Math.exp(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bj.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b = Math.sqrt(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); //开始设置功能键 bm.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b = Math.log(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); double b = Double.parseDouble(s); b = Math.abs(b); b = b * 10000; b = Math.rint(b); b = b / 10000; t.setText("" + b); } }); bk.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); t.setText(""); } }); ba.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { s1 = t.getText(); op = '+'; t.setText(""); } }); bb.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { s1 = t.getText(); op = '-'; t.setText(""); } }); bc.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { s1 = t.getText(); op = '*'; t.setText(""); } }); bd.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { s1 = t.getText(); op = '/'; t.setText(""); } }); be.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String s = t.getText(); s += "."; t.setText(s); } }); bf.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { s2 = t.getText(); double u1 = Double.parseDouble(s1); double u2 = Double.parseDouble(s2); if (op == '+') u3 = u1 + u2; if (op == '-') u3 = u1 - u2; if (op == '*') u3 = u1 * u2; if (op == '/') u3 = u1 / u2; t.setText("" + u3); } }); //添加退出按钮 bbb.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { System.exit(0); } }); } //设置主函数 public static void main(String[] args) { Untitled1 w = new Untitled1(); w.pack(); w.show(); } }

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