文件名称：java编的简单计算器
文件大小：6KB
文件格式：JAVA
更新时间：2014-07-27 09:43:32
计算器 一个java编译的最简单的计算器 import java.awt.*; import java.awt.event.*; import javax.swing.*; public class jisuan extends JFrame implements ActionListener{ /** * */ private static final long serialVersionUID = 5823423246304135749L; JPanel cp=new JPanel(); JPanel cp1=new JPanel(); Double nu1,nu2; ImageIcon ii=new ImageIcon("images/2_marcblue.jpg"); JPanel cp2=new JPanel(); JLabel jl=new JLabel(); String[] Jlabel = {"7","8","9","/","4","5","6","*","1","2","3","-","0",".","=","+"};//声明标签数组label1存放按钮上的标签 JButton[] b; JButton h=new JButton("c"); //private JButton buttonWithTitle=new JButton("Button with Title",new ImageIcon("src/anwendung/tree.jpg")); private JButton c=new JButton("后退",ii); JButton pf=new JButton("x^y"); int j=0,n=0,a=0,g=0; //Button[] b=new Button[10]; //JTextArea jt=new JTextArea(1,34); JTextField jt=new JTextField("0",30); //JLabel jt=new JLabel(); String st,st1,st2; Boolean t=true; public jisuan(){ setTitle("计算器"); setSize(220,220); //this.setbackgroundImage = new ImageIcon("images/6.21.bmp"); cp=(JPanel)this.getContentPane(); //this.setExtendedState(HIDE_ON_CLOSE); this.setUndecorated(false); this.setResizable(false);//窗口固定不变。 //cp.setEnabled(false); this.addWindowListener(new WindowAdapter(){//给窗口f添加窗口事件监听器 public void windowClosing(WindowEvent eve){ System.exit(0); } }); cp.setLayout(new BorderLayout()); cp.add(jt,BorderLayout.NORTH); cp.add(cp1,BorderLayout.CENTER); //cp.add(cp2,BorderLayout.SOUTH); //cp1.setLayout(new GridLayout(3,4)); cp1.setLayout(null); //cp.add(jt); jt.setHorizontalAlignment(JTextField.RIGHT);//右边显示。 jt.setFont(new Font("Serif",Font.BOLD|Font.ITALIC,15));//设置字体的大小和显示方式； jt.setBackground(Color.white);//背景白色 jt.setEditable(false); //jt.setEnabled(true); b = new JButton[Jlabel.length]; for(int i=0;i