java完全简单计算器

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1、本程序实现了，java计算器，+-*/等简单的四则运算，且可以在有结果的基础上继续进行简单运算。实现了：+-*/的自由切换±的自由运用（可以在第一个数亦可在第二个数子的取反）解决了其他计算器0.8+.8没有解决的问题（小数点问题）解决了其他计算器可以多次输入0的问题解决了整型浮点型的问题如4+4=8而不会显示8.0本计算器能运行整型和浮点型运算，且结果显示正常importjava.awt.Container;importjava.awt.GridLayout;importjava.awt.TextComponent

2、;importjava.awt.TextField;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.awt.event.TextEvent;importjava.awt.event.TextListener;importjavax.swing.Icon;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JOptionP

3、ane;importjavax.swing.JTextField;importjavax.swing.WindowConstants;publicclassCLACextendsJFrame{JTextFieldnumText,resultText;JButtonnum1,num2,num3,num4,num5,num6,num7,num8,num9,num0,spot,plus,nminus,Mul,divide,clear,result,c,negative;doublex,y;StringBufferstr;

4、intz;doublenum=0;ActionListeneral=null;booleanfreshstart=true;publicCLAC(){setTitle("计算器");setLayout(null);setBounds(0,0,370,370);//TextFieldnumText=newTextField("0");numText=newJTextField("0");resultText=newJTextField("");numText.setHorizontalAlignment(JTextF

5、ield.RIGHT);resultText.setHorizontalAlignment(JTextField.RIGHT);numText.setEditable(false);resultText.setEditable(false);ContainerwindowContainer=getContentPane();num1=newJButton("1");num1.addActionListener(newBt());num2=newJButton("2");num2.addActionListener(

6、newBt());num3=newJButton("3");num3.addActionListener(newBt());num4=newJButton("4");num4.addActionListener(newBt());num5=newJButton("5");num5.addActionListener(newBt());num6=newJButton("6");num6.addActionListener(newBt());num7=newJButton("7");num7.addActionList

7、ener(newBt());num8=newJButton("8");num8.addActionListener(newBt());num9=newJButton("9");num9.addActionListener(newBt());num0=newJButton("0");num0.addActionListener(newBt());spot=newJButton(".");spot.addActionListener(newBt());plus=newJButton("+");plus.addActio

8、nListener(newBt());nminus=newJButton("-");nminus.addActionListener(newBt());Mul=newJButton("*");Mul.addActionListener(newBt());divide=newJButton("/");divide.addActionListener(newBt