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1、JavaGUI设计运用JavaSwing技术实现一个简单的“计算器”，界面如下：第12页共12页以上测试6/3=2.0主要实现代码如下:packagedomain;importjavax.swing.*;importjavax.swing.event.*;importjava.awt.*;importjava.awt.event.*;publicclasscalculatorextendsJFrameimplementsActionListener{JFrameframe;privateJButtonjia=newJButton("+");privateJButto
2、njian=newJButton("-");privateJButtoncheng=newJButton("*");privateJButtonchu=newJButton("/");privateJButtonqiuyi=newJButton("%");privateJButtondeng=newJButton("=");privateJButtonfu=newJButton("+/-");privateJButtondian=newJButton(".");privateJButtonkai=newJButton("sqrt");privateJButtondi
3、ao=newJButton("1/x");privateTextFieldk1=newTextField();privateobjConversionconvert=newobjConversion();JMenuItemcopy,paste,help,about;JButtonbackspace,ce,c,num0,num1,num2,num3,num4,num5,num6,num7,第12页共12页num8,num9;Containercp;JTextFieldtext;Stringcopycontent="";booleanclickable=true,cle
4、ar=true;intall=0;doubleqian;Stringfuhao;intfirst=1;publiccalculator(){setTitle("计算器");setSize(400,300);setLocation(250,200);text=newJTextField(25);text.setText("0.");text.setHorizontalAlignment(JTextField.RIGHT);//从右到左JPanelcp1=newJPanel();JPanelcp2=newJPanel();JPanelcp3=newJPanel();cp
5、=getContentPane();cp.add(cp1,"North");cp.add(cp2,"Center");cp.add(cp3,"South");cp1.setLayout(newGridLayout(1,6));cp2.setLayout(newGridLayout(1,3));cp3.setLayout(newGridLayout(6,6));ButtonGroupbtg=newButtonGroup();JTextFieldt3=newJTextField(25);cp1.add(text);text.setEditable(false);text
6、.setBackground(newColor(255,255,255));backspace=newJButton("Backspace");backspace.setForeground(newColor(255,0,0));backspace.addActionListener(this);ce=newJButton("CE");第12页共12页ce.setForeground(newColor(255,0,0));ce.addActionListener(this);c=newJButton("C");c.setForeground(newColor(255
7、,0,0));c.addActionListener(this);k1.setVisible(false);cp2.add(k1);cp2.add(backspace);cp2.add(ce);cp2.add(c);num0=newJButton("0");num1=newJButton("1");num2=newJButton("2");num3=newJButton("3");num4=newJButton("4");num5=newJButton("5");num6=newJButton("6");num7=newJButton("7");num8=new
