带有进制转换的计算器 java源码_精品.doc

带有八进制和十六进制转换的计算器 截图 import java.awt.*; import java.awt.event.*; class This_number_too_big extends Exception {}//自定义的一个结果溢出异常类 class Jsp2003 extends Frame implements ItemListener,ActionListener { public Jsp2003() { addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { dispose(); System.exit(0); } }); } static Jsp2003 mainFrame = new Jsp2003(); static Label lab=new Label(0); static Panel pnl1=new Panel(new GridLayout(4,3,3,3)); static Panel pnl2=new Panel(new GridLayout(4,1,3,3)); static Panel pnl3=new Panel(new GridLayout(1,2,3,3)); static Panel pnl4=new Panel(new GridLayout(6,1,3,3)); static Button bt9=new Button(9); static Button bt8=new Button(8); static Button bt7=new Button(7); static Button bt6=new Button(6); static Button bt5=new Button(5); static Button bt4=new Button(4); static Button bt3=new Button(3); static Button bt2=new Button(2); static Button bt1=new Button(1); static Button bt0=new Button(0); static Button btdot=new Button(.); static Button btequ=new Button(=); static Button btadd=new Button(+); static Button btsub=new Button(-); static Button btmul=new Button(*); static Button btdev=new Button(/); static Button btA=new Button(A); static Button btB=new Button(B); static Button btC=new Button(C); static Button btD=new Button(D); static Button btE=new Button(E); static Button btF=new Button(F); static Checkbox ckb8=new Checkbox(八进制); static Checkbox ckb10=new Checkbox(十进制); static Checkbox ckb16=new Checkbox(十六进制); static Button btc=new Button(clear); static Button btt=new Button(backspace); public int number=0,length=18; //number是用来记录输入的数字个数，length是用来设置在不同进制下允许输入的最多数字位数，默认为十进制 public char mark=n; //设置运算符号为没有即为‘n’，它的值是‘+’‘-’‘*’‘/’ public double data=0; //设置运算数据为零 public char ch; //用来临时存放所按按钮的第一个字符 public boolean Refresh=false;//设置lab是否要在输入数据的时候刷新，初始为否 public static void main(String args[]) { System.out.println(Starting Jsp2003...); lab.setAlignment(Label.RIGHT); lab.set