GUI_修改窗体的图标代码

来源：互联网发布：linux tail命令详解编辑：程序博客网时间：2024/06/03 13:35

/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */package cn.itcast.util;import java.awt.Image;import java.awt.Toolkit;import javax.swing.JFrame;/** * 专门做界面效果的类 * * @author 风清杨 */public class UiUtil {    private UiUtil() {    }    //修改窗体的图标    public static void setFrameImage(JFrame jf) {        //获取工具类对象        //public static Toolkit getDefaultToolkit():获取默认工具包。        Toolkit tk = Toolkit.getDefaultToolkit();        //根据路径获取图片        Image i = tk.getImage("src\\cn\\itcast\\result\\jjcc.jpg");        //给窗体设置图片        jf.setIconImage(i);    }}

/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */package cn.itcast.view;import cn.itcast.util.UiUtil;/** * * @author 风清杨 */public class NewJFrame extends javax.swing.JFrame {    /**     * Creates new form NewJFrame     */    public NewJFrame() {        initComponents();        init();        UiUtil.setFrameImage(this);    }    public void init() {        this.setTitle("四则运算符");    }    /**     * 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")    // <editor-fold defaultstate="collapsed" desc="Generated Code">                              private void initComponents() {        jLabel1 = new javax.swing.JLabel();        jLabel2 = new javax.swing.JLabel();        jLabel3 = new javax.swing.JLabel();        firstNumber = new javax.swing.JTextField();        secondNumber = new javax.swing.JTextField();        resultNumber = new javax.swing.JTextField();        selectOperator = new javax.swing.JComboBox();        jButton1 = new javax.swing.JButton();        jLabel4 = new javax.swing.JLabel();        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);        jLabel1.setText("第一个操作数");        jLabel2.setText("结果");        jLabel3.setText("第一个操作数");        selectOperator.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "+", "-", "*", "/" }));        jButton1.setText("确定");        jButton1.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(java.awt.event.ActionEvent evt) {                jButton1ActionPerformed(evt);            }        });        jLabel4.setText("=");        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());        getContentPane().setLayout(layout);        layout.setHorizontalGroup(            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)            .addGroup(layout.createSequentialGroup()                .addGap(19, 19, 19)                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)                    .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                    .addComponent(firstNumber))                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)                .addComponent(selectOperator, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)                    .addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)                    .addComponent(secondNumber))                .addGap(13, 13, 13)                .addComponent(jLabel4)                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)                    .addComponent(jButton1)                    .addComponent(jLabel2)                    .addComponent(resultNumber, javax.swing.GroupLayout.PREFERRED_SIZE, 78, javax.swing.GroupLayout.PREFERRED_SIZE))                .addContainerGap(43, Short.MAX_VALUE))        );        layout.setVerticalGroup(            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)            .addGroup(layout.createSequentialGroup()                .addContainerGap()                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)                    .addComponent(jLabel1)                    .addComponent(jLabel2)                    .addComponent(jLabel3))                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)                    .addComponent(firstNumber, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(secondNumber, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(resultNumber, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(selectOperator, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)                    .addComponent(jLabel4))                .addGap(33, 33, 33)                .addComponent(jButton1)                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))        );        pack();    }// </editor-fold>                            private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                                 //获取第一个操作数        String firstNumberString = this.firstNumber.getText().trim();        //获取运算符        String selectOperator = this.selectOperator.getSelectedItem().toString();        //获取第二个操作数        String secondNumberString = this.secondNumber.getText().trim();        //把字符串转换成整数        int firstNumber = Integer.parseInt(firstNumberString);        int secondNumber = Integer.parseInt(secondNumberString);        //定义变量接收结果        int resultNumber = 0;        switch (selectOperator) {            case "+":                resultNumber = firstNumber + secondNumber;                break;            case "-":                resultNumber = firstNumber - secondNumber;                break;            case "*":                resultNumber = firstNumber * secondNumber;                break;            case "/":                resultNumber = firstNumber / secondNumber;                break;        }        //把结果赋值给结果框        this.resultNumber.setText(String.valueOf(resultNumber));    }                                            /**     * @param args the command line arguments     */    public static void main(String args[]) {        /* Set the Nimbus look and feel */        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html          */        try {            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {                if ("Nimbus".equals(info.getName())) {                    javax.swing.UIManager.setLookAndFeel(info.getClassName());                    break;                }            }        } catch (ClassNotFoundException ex) {            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);        } catch (InstantiationException ex) {            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);        } catch (IllegalAccessException ex) {            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);        } catch (javax.swing.UnsupportedLookAndFeelException ex) {            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);        }        //</editor-fold>        /* Create and display the form */        java.awt.EventQueue.invokeLater(new Runnable() {            public void run() {                new NewJFrame().setVisible(true);            }        });    }    // Variables declaration - do not modify                         private javax.swing.JTextField firstNumber;    private javax.swing.JButton jButton1;    private javax.swing.JLabel jLabel1;    private javax.swing.JLabel jLabel2;    private javax.swing.JLabel jLabel3;    private javax.swing.JLabel jLabel4;    private javax.swing.JTextField resultNumber;    private javax.swing.JTextField secondNumber;    private javax.swing.JComboBox selectOperator;    // End of variables declaration                   }

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