NetBeans制作计算器

NetBeans制作的计算器 实现加减乘除等运算

/*
 * To change this template choose Tools | Templates
 * and open the template in the editor.
 */
package calculator;

import javax.swing.JButton;

/**
 *
 * @author Administrator
 */
public class CalculatorJframe extends javax.swing.Jframe {

    private expression exp;
    private boolean preBtnIsSign = false;

    /**
     * Creates new form CalculatorJframe
     */
    public CalculatorJframe（） {
        initComponents（）;
        //this.setLocation（250 100）;
        exp=new expression（）;
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings（“unchecked“）
    // //GEN-BEGIN:initComponents
    private void initComponents（） {

        txt_show = new javax.swing.JTextField（）;
        btn_num1 = new javax.swing.JButton（）;
        btn_num2 = new javax.swing.JButton（）;
        btn_num3 = new javax.swing.JButton（）;
        btn_num4 = new javax.swing.JButton（）;
        btn_num5 = new javax.swing.JButton（）;
        btn_num6 = new javax.swing.JButton（）;
        btn_num7 = new javax.swing.JButton（）;
        btn_num8 = new javax.swing.JButton（）;
        btn_num9 = new javax.swing.JButton（）;
        btn_c = new javax.swing.JButton（）;
        btn_add = new javax.swing.JButton（）;
        btn_divi = new javax.swing.JButton（）;
        btn_del = new javax.swing.JButton（）;
        btn_mult = new javax.swing.JButton（）;
        btn_subt = new javax.swing.JButton（）;
        btn_equal = new javax.swing.JButton（）;
        btn_num0 = new javax.swing.JButton（）;
        btn_point = new javax.swing.JButton（）;

        setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）;

        txt_show.setFont（new java.awt.Font（“宋体“ 0 24））; // NOI18N
        txt_show.setHorizontalAlignment（javax.swing.JTextField.RIGHT）;
        txt_show.setText（“0“）;
        txt_show.setCursor（new java.awt.Cursor（java.awt.Cursor.DEFAULT_CURSOR））;

        btn_num1.setText（“1“）;
        btn_num1.addActionListener（new java.awt.event.ActionListener（） {
            public void actionPerformed（java.awt.event.ActionEvent evt） {
                btn_numActionPerformed（evt）;
            }
        }）;

        btn_num2.setText（“2“）;
        btn_num2.addActionListener（new java.awt.event.ActionListener（） {
            public void actionPerformed（java.awt.event.ActionEvent evt） {
                btn_numActionPerformed（evt）;
            }
        }）;

        btn_num3.setText（“3“）;
        btn_num3.addActionListener（new java.awt.event.ActionListener（） {
            public void actionPerformed（java.awt.event.ActionEvent evt） {
                btn_numActionPerformed（evt）;
            }
        }）;

        btn_num4.setText（“4“）;
        btn_num4.addActionListener（new java.awt.event.ActionListener（） {
            public void actionPerformed（java.awt.event

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       3731  2015-07-05 08:27  02-zhongruyi\build.xml

     文件         85  2015-06-28 20:00  02-zhongruyi\manifest.mf

     文件          0  2015-07-05 09:36  02-zhongruyi\build\classes\.netbeans_automatic_build

     文件          0  2015-07-05 09:36  02-zhongruyi\build\classes\.netbeans_update_resources

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$1.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$10.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$11.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$12.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$13.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$14.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$15.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$16.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$17.class

     文件        808  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$18.class

     文件        572  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$19.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$2.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$3.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$4.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$5.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$6.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$7.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$8.class

     文件        806  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe$9.class

     文件      11036  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe.class

     文件      16564  2015-07-05 11:35  02-zhongruyi\build\classes\calculator\CalculatorJframe.form

     文件       2052  2015-07-05 11:48  02-zhongruyi\build\classes\calculator\expression.class

     文件      78054  2015-07-05 08:27  02-zhongruyi\nbproject\build-impl.xml

     文件        475  2015-07-05 08:27  02-zhongruyi\nbproject\genfiles.properties

     文件       2345  2015-07-05 08:27  02-zhongruyi\nbproject\project.properties

     文件        520  2015-07-05 08:27  02-zhongruyi\nbproject\project.xml

............此处省略16个文件信息