Jbutton接收鼠標單擊時顯示Jdialog框

我被困在一個問題，我點擊一個菜單項，並需要它來調出一個JDialog框，但它不會出現它。編碼我已經研究並發現，我應該使用如果我不是錯了是一樣的東西Jbutton接收鼠標單擊時顯示Jdialog框

if(evt.getSource == Jmenuitem1) 
Jdialog.setVisible(true); 
Jdialog.setBounds (400,0,400,400)

下面是類IM工作的全編碼。爲什麼當我點擊菜單項時什麼都不做。

package dvdlibrary2; 

import javax.swing.JDialog; 




public class UImain extends javax.swing.JFrame { 


    public UImain() { 
     initComponents(); 
    } 


    @SuppressWarnings("unchecked") 

    private void initComponents() { 

     input1 = new javax.swing.JDialog(); 
     iTitle1 = new javax.swing.JLabel(); 
     iGenre = new javax.swing.JLabel(); 
     iRating = new javax.swing.JLabel(); 
     iLength = new javax.swing.JLabel(); 
     iDescription = new javax.swing.JLabel(); 
     jTextField1 = new javax.swing.JTextField(); 
     jComboBox1 = new javax.swing.JComboBox(); 
     jComboBox2 = new javax.swing.JComboBox(); 
     jTextField2 = new javax.swing.JTextField(); 
     jScrollPane3 = new javax.swing.JScrollPane(); 
     jTextArea1 = new javax.swing.JTextArea(); 
     jScrollPane1 = new javax.swing.JScrollPane(); 
     mlist = new javax.swing.JList(); 
     jLabel1 = new javax.swing.JLabel(); 
     dtitle = new javax.swing.JTextField(); 
     jScrollPane2 = new javax.swing.JScrollPane(); 
     ddescription = new javax.swing.JTextArea(); 
     dgenre = new javax.swing.JTextField(); 
     drating = new javax.swing.JTextField(); 
     dlength = new javax.swing.JTextField(); 
     jMenuBar1 = new javax.swing.JMenuBar(); 
     jMenu1 = new javax.swing.JMenu(); 
     newdvd = new javax.swing.JMenuItem(); 
     jMenuItem2 = new javax.swing.JMenuItem(); 
     jMenuItem3 = new javax.swing.JMenuItem(); 

     input1.setBounds(new java.awt.Rectangle(400, 0, 400, 400)); 
     input1.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR)); 
     input1.setVisible(false); 
     input1.setBounds(400,0,400,400); 

     iTitle1.setText("Title"); 

     iGenre.setText("Genre"); 

     iRating.setText("Rating"); 

     iLength.setText("Length"); 

     iDescription.setText("Description"); 

     jTextField1.setText("jTextField1"); 

     jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" })); 

     jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" })); 

     jTextField2.setText("jTextField2"); 

     jTextArea1.setColumns(20); 
     jTextArea1.setRows(5); 
     jScrollPane3.setViewportView(jTextArea1); 

     javax.swing.GroupLayout input1Layout = new javax.swing.GroupLayout(input1.getContentPane()); 
     input1.getContentPane().setLayout(input1Layout); 
     input1Layout.setHorizontalGroup(
      input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(input1Layout.createSequentialGroup() 
       .addGap(27, 27, 27) 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addComponent(iDescription) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
         .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addComponent(iLength) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
         .addComponent(jTextField2)) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addComponent(iRating) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
         .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addComponent(iGenre) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
         .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addComponent(iTitle1) 
         .addGap(18, 18, 18) 
         .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE))) 
       .addContainerGap(159, Short.MAX_VALUE)) 
     ); 
     input1Layout.setVerticalGroup(
      input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(input1Layout.createSequentialGroup() 
       .addContainerGap() 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
        .addComponent(iTitle1) 
        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addGap(18, 18, 18) 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
        .addComponent(iGenre) 
        .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addGap(24, 24, 24) 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
        .addComponent(iRating) 
        .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addGap(18, 18, 18) 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
        .addComponent(iLength) 
        .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addGroup(input1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addGap(18, 18, 18) 
         .addComponent(iDescription) 
         .addContainerGap(102, Short.MAX_VALUE)) 
        .addGroup(input1Layout.createSequentialGroup() 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
         .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addContainerGap()))) 
     ); 

     input1.getAccessibleContext().setAccessibleParent(newdvd); 

     setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 

     mlist.setModel(new javax.swing.AbstractListModel() { 
      String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" }; 
      public int getSize() { return strings.length; } 
      public Object getElementAt(int i) { return strings[i]; } 
     }); 
     jScrollPane1.setViewportView(mlist); 

     jLabel1.setText("Movies In Library"); 

     dtitle.setEditable(false); 

     ddescription.setColumns(20); 
     ddescription.setRows(5); 
     ddescription.setEnabled(false); 
     jScrollPane2.setViewportView(ddescription); 

     dgenre.setEditable(false); 

     drating.setEditable(false); 

     dlength.setEditable(false); 

     jMenu1.setText("File"); 

     newdvd.setText("New DVD"); 
     newdvd.addMouseListener(new java.awt.event.MouseAdapter() { 
      public void mouseClicked(java.awt.event.MouseEvent evt) { 
       newdvdMouseClicked(evt); 
       newdvdMouseClicked1(evt); 
      } 
     }); 
     jMenu1.add(newdvd); 

     jMenuItem2.setText("About"); 
     jMenu1.add(jMenuItem2); 

     jMenuItem3.setText("Preferences"); 
     jMenu1.add(jMenuItem3); 

     jMenuBar1.add(jMenu1); 

     setJMenuBar(jMenuBar1); 

     javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); 
     getContentPane().setLayout(layout); 
     layout.setHorizontalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) 
        .addGroup(layout.createSequentialGroup() 
         .addGap(54, 54, 54) 
         .addComponent(jLabel1) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
          .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
           .addComponent(dtitle, javax.swing.GroupLayout.PREFERRED_SIZE, 117, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addGap(10, 10, 10)) 
          .addGroup(layout.createSequentialGroup() 
           .addGap(87, 87, 87) 
           .addComponent(dgenre, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
           .addComponent(drating, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
           .addComponent(dlength, javax.swing.GroupLayout.DEFAULT_SIZE, 47, Short.MAX_VALUE)))) 
        .addGroup(layout.createSequentialGroup() 
         .addGap(23, 23, 23) 
         .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 131, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 70, Short.MAX_VALUE) 
         .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 142, javax.swing.GroupLayout.PREFERRED_SIZE))) 
       .addGap(37, 37, 37)) 
     ); 
     layout.setVerticalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(layout.createSequentialGroup() 
       .addContainerGap() 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
        .addComponent(jLabel1) 
        .addComponent(dtitle, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) 
        .addGroup(layout.createSequentialGroup() 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
         .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 224, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
         .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 72, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
          .addComponent(dgenre, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
          .addComponent(drating, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
          .addComponent(dlength, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
         .addGap(6, 6, 6))) 
       .addContainerGap(55, Short.MAX_VALUE)) 
     ); 

     pack(); 
    }       

    private void newdvdMouseClicked(java.awt.event.MouseEvent evt) {          
     if(evt.getSource()== newdvd) 
      input1.setVisible(true); 
      input1.setBounds(400,0,400,400); 

    }         

    private void newdvdMouseClicked1(java.awt.event.MouseEvent evt) {          

    }          


    public static void uimain() { 
     java.awt.EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       new UImain().setVisible(true); 
      } 
     }); 
    } 


    private javax.swing.JTextArea ddescription; 
    private javax.swing.JTextField dgenre; 
    private javax.swing.JTextField dlength; 
    private javax.swing.JTextField drating; 
    private javax.swing.JTextField dtitle; 
    private javax.swing.JLabel iDescription; 
    private javax.swing.JLabel iGenre; 
    private javax.swing.JLabel iLength; 
    private javax.swing.JLabel iRating; 
    private javax.swing.JLabel iTitle1; 
    private javax.swing.JDialog input1; 
    private javax.swing.JComboBox jComboBox1; 
    private javax.swing.JComboBox jComboBox2; 
    private javax.swing.JLabel jLabel1; 
    private javax.swing.JMenu jMenu1; 
    private javax.swing.JMenuBar jMenuBar1; 
    private javax.swing.JMenuItem jMenuItem2; 
    private javax.swing.JMenuItem jMenuItem3; 
    private javax.swing.JScrollPane jScrollPane1; 
    private javax.swing.JScrollPane jScrollPane2; 
    private javax.swing.JScrollPane jScrollPane3; 
    private javax.swing.JTextArea jTextArea1; 
    private javax.swing.JTextField jTextField1; 
    private javax.swing.JTextField jTextField2; 
    private javax.swing.JList mlist; 
    private javax.swing.JMenuItem newdvd; 


}

測試結果

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

package dvdlibrary2; 

import org.junit.After; 
import org.junit.AfterClass; 
import org.junit.Before; 
import org.junit.BeforeClass; 
import org.junit.Test; 
import static org.junit.Assert.*; 

/** 
* 
* @author jon 
*/ 
public class MainTest { 

    public MainTest() { 
    } 

    @BeforeClass 
    public static void setUpClass() throws Exception { 
    } 

    @AfterClass 
    public static void tearDownClass() throws Exception { 
    } 

    @Before 
    public void setUp() { 
    } 

    @After 
    public void tearDown() { 
    } 

    /** 
    * Test of main method, of class Main. 
    */ 
    @Test 
    public void testMain() { 
     System.out.println("main"); 
     String[] args = null; 
     Main.main(args); 
     // TODO review the generated test code and remove the default call to fail. 
     fail("The test case is a prototype."); 
    } 

} 

Test of UImain class 

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

package dvdlibrary2; 

import org.junit.After; 
import org.junit.AfterClass; 
import org.junit.Before; 
import org.junit.BeforeClass; 
import org.junit.Test; 
import static org.junit.Assert.*; 

/** 
* 
* @author jon 
*/ 
public class UImainTest { 

    public UImainTest() { 
    } 

    @BeforeClass 
    public static void setUpClass() throws Exception { 
    } 

    @AfterClass 
    public static void tearDownClass() throws Exception { 
    } 

    @Before 
    public void setUp() { 
    } 

    @After 
    public void tearDown() { 
    } 

    /** 
    * Test of uimain method, of class UImain. 
    */ 
    @Test 
    public void testUimain() { 
     System.out.println("uimain"); 
     UImain.uimain(); 
     // TODO review the generated test code and remove the default call to fail. 
     fail("The test case is a prototype."); 
    } 

}

來源

2010-11-25 user519670

你能提供一個測試用例，而不是這個完整的代碼？ – 2010-11-25 05:09:41

我該怎麼做，對不起，我從來沒有這樣做過 – user519670 2010-11-25 05:14:16

您應該使用的ActionListener代替的MouseListener處理事件。變化：

newdvd.addMouseListener(new java.awt.event.MouseAdapter() { 
    public void mouseClicked(java.awt.event.MouseEvent evt) { 
     newdvdMouseClicked(evt); 
     newdvdMouseClicked1(evt); 
    } 
});

到：

newdvd.addActionListener(new ActionListener() { 
    public void actionPerformed(ActionEvent e) { 
     input1.setVisible(true); 
     input1.setBounds(400,0,400,400); 
    } 
});

而且你的對話框會顯示出來。

來源

2010-11-25 05:21:02

而不是使用mouseClicked事件使用的：

public void mousePressed(java.awt.event.MouseEvent evt)

來源

2010-11-25 05:21:59

Jbutton接收鼠標單擊時顯示Jdialog框

回答

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