计算机组织原理与体系结构课程设计用Java Swing实现简单的计算器功能

1、用java swing实现简单的计算器功能 班级： 姓名： 学号： 计算机科学与工程学院 网络工程系一：源代码如下：package com.xinzhan.demoframe;import java.awt.font;import java.awt.image;import java.awt.toolkit;import java.awt.event.actionevent;import java.awt.event.actionlistener;import javax.swing.jbutton;import javax.swing.jframe;import javax.swing.jo

2、ptionpane;import javax.swing.jpanel;import javax.swing.jtextfield;public class calculatorframe extends jframe implements actionlistenerpublic jtextfield textfield = new jtextfield();private final jpanel panel = new jpanel();private final jbutton b12 = new jbutton();private final jbutton b13 = new jb

3、utton();private final jbutton s5 = new jbutton();private final jbutton s1 = new jbutton();private final jbutton b7 = new jbutton();private final jbutton b8 = new jbutton();private final jbutton b9 = new jbutton();private final jbutton s2 = new jbutton();private final jbutton b4 = new jbutton();priva

4、te final jbutton b5 = new jbutton();private final jbutton b6 = new jbutton();private final jbutton s3 = new jbutton();private final jbutton b1 = new jbutton();private final jbutton b2 = new jbutton();private final jbutton b3 = new jbutton();private final jbutton s4 = new jbutton();private final jbut

5、ton b0 = new jbutton();private final jbutton b11 = new jbutton();private final jbutton bn = new jbutton();private final image icon1 = toolkit.getdefaulttoolkit().getimage(image/cal.png);private boolean add,sub,mul,div;private boolean end = true;private double num1;/第一个操作数private double num2;/第二个操作数p

6、rivate double result;/存放结果/* * launch the application * param args */public static void main(string args) try calculatorframe frame = new calculatorframe();frame.setvisible(true); catch (exception e) e.printstacktrace();/* * create the frame * return */public calculatorframe() super();this.setbounds

7、(toolkit.getdefaulttoolkit().getscreensize().width/2-553/2,toolkit.getdefaulttoolkit().getscreensize().height/2-487/2, 553, 487);setdefaultcloseoperation(jframe.exit_on_close);try jbinit(); catch (throwable e) e.printstacktrace();private void jbinit() throws exception getcontentpane().setlayout(null

8、);setfont(new font(黑体, font.plain, 20);settitle(计算机jhon2.0版);this.seticonimage(icon1);getcontentpane().add(textfield);textfield.setfont(new font(楷体, font.plain, 20);textfield.setbounds(47, 29, 448, 83);textfield.sethorizontalalignment(jtextfield.right);textfield.seteditable(false);textfield.settext(

9、0);getcontentpane().add(panel);panel.setlayout(null);panel.setbounds(10, 141, 517, 308);panel.add(b12);b12.setfont(new font(楷体, font.plain, 20);b12.setbounds(10, 10, 106, 40);b12.settext(cancel);b12.addactionlistener(this);panel.add(b13);b13.setfont(new font(楷体, font.plain, 30);b13.settext(ce);b13.s

10、etbounds(143, 10, 106, 40);b13.addactionlistener(this);panel.add(s5);s5.settext(exit);s5.setfont(new font(楷体, font.plain, 30);s5.setbounds(270, 10, 106, 40);s5.addactionlistener(this);panel.add(s1);s1.setfont(new font(楷体, font.plain, 30);s1.settext(+);s1.setbounds(401, 10, 106, 40);s1.addactionliste

11、ner(this);panel.add(b7);b7.setfont(new font(楷体, font.plain, 30);b7.settext(7);b7.setbounds(10, 70, 106, 40);b7.addactionlistener(this);panel.add(b8);b8.setfont(new font(楷体, font.plain, 30);b8.settext(8);b8.setbounds(143, 70, 106, 40);b8.addactionlistener(this);panel.add(b9);b9.setfont(new font(楷体, f

12、ont.plain, 30);b9.settext(9);b9.setbounds(270, 70, 106, 40);b9.addactionlistener(this);panel.add(s2);s2.setfont(new font(, font.plain, 30);s2.settext(-);s2.setbounds(401, 70, 106, 40);s2.addactionlistener(this);panel.add(b4);b4.setfont(new font(楷体, font.plain, 30);b4.settext(4);b4.setbounds(10, 133,

13、 106, 40);b4.addactionlistener(this);panel.add(b5);b5.setfont(new font(楷体, font.plain, 30);b5.settext(5);b5.setbounds(143, 133, 106, 40);b5.addactionlistener(this);panel.add(b6);b6.setfont(new font(楷体, font.plain, 30);b6.settext(6);b6.setbounds(270, 133, 106, 40);b6.addactionlistener(this);panel.add

14、(s3);s3.setfont(new font(楷体, font.plain, 30);s3.settext(*);s3.setbounds(401, 133, 106, 40);s3.addactionlistener(this);panel.add(b1);b1.setfont(new font(楷体, font.plain, 30);b1.settext(1);b1.setbounds(10, 195, 106, 40);b1.addactionlistener(this);panel.add(b2);b2.setfont(new font(楷体, font.plain, 30);b2

15、.settext(2);b2.setbounds(143, 195, 106, 40);b2.addactionlistener(this);panel.add(b3);b3.setfont(new font(楷体, font.plain, 30);b3.settext(3);b3.setbounds(270, 195, 106, 40);b3.addactionlistener(this);panel.add(s4);s4.setfont(new font(楷体, font.plain, 30);s4.settext(/);s4.setbounds(401, 195, 106, 40);s4

16、.addactionlistener(this);panel.add(b0);b0.setfont(new font(楷体, font.plain, 30);b0.settext(0);b0.setbounds(10, 258, 106, 40);b0.addactionlistener(this);panel.add(b11);b11.setfont(new font(楷体, font.plain, 30);b11.settext(.);b11.setbounds(143, 258, 106, 40);b11.addactionlistener(this);panel.add(bn);bn.

17、setfont(new font(楷体, font.plain, 30);bn.settext(=);bn.setbounds(270, 258, 237, 40);bn.addactionlistener(this); private void getnumber(int num)string str = ; string s = new string(string.valueof(num);if(end)/输入完毕，将文本框置零this.textfield.settext(0);end = false;else if(this.textfield.gettext().equals(0)th

18、is.textfield.settext(s);/如果文本框值为零，则将其覆盖elsestr = this.textfield.gettext()+s;this.textfield.settext(str);/如果文本框值不为零，则在后面添加数字private void sign(int s)if(s=1)add = true;sub = false;mul = false;div = false;else if(s=2)add = false;sub = true;mul = false;div = false;else if(s=3)add = false;sub = false;mul = true;div = false;else if(s=4)add = false;sub = false;mul = false;div = true;else if(s=5)add = false;sub = false;mul = false;div = false;num1 = double.parsedouble(this.textfield.gettext();/获得输入的第一个操作数end = false;this.textfield.settext(0);/操作