のJPanel iがリストの横のようにJScrollPaneにパネルを挿入したい

Question

こんにちは動作しませんが、私は設定よりも、パネルが境界を尊重していない、これは私のコードItemCursoはJPanelのから、最後の拡張

public PrincipalPanel() { 
     initComponents(); 
     for(int i=0;i<3;i++){ 
      addItem(new ItemCurso(),i); 
     } 
    } 

    public void addItem(ItemCurso item,int index){ 
     item.setVisible(true); 
     item.setBounds(400*index, 0, 400, 300); 
     jScrollPane1.getViewport().add(item,null); 
    } 

ですItemCursoは私がするJScrollPaneのサイズを取得する設定とスクロールが

に動作しないことItemCursoのコードは次です：

public class ItemCurso extends javax.swing.JPanel { 

    public ItemCurso() { 
     initComponents(); 
    } 


    @SuppressWarnings("unchecked") 
    private void initComponents() { 

jLabel1 = new javax.swing.JLabel(); 


jPanel1 = new javax.swing.JPanel(); 
    nombreTxt = new javax.swing.JLabel(); 
    escuelaTxt = new javax.swing.JLabel(); 
    bimestresComboBox = new javax.swing.JComboBox(); 
    jButton1 = new javax.swing.JButton(); 
    jButton2 = new javax.swing.JButton(); 
    jButton3 = new javax.swing.JButton(); 
    jButton4 = new javax.swing.JButton(); 
    jButton5 = new javax.swing.JButton(); 
    jButton6 = new javax.swing.JButton(); 
    jButton7 = new javax.swing.JButton(); 

jLabel1.setText("jLabel1"); 

setBackground(new java.awt.Color(229, 232, 221)); 
setPreferredSize(new java.awt.Dimension(100, 100)); 

jPanel1.setBackground(new java.awt.Color(255, 255, 255)); 

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); 
jPanel1.setLayout(jPanel1Layout); 
jPanel1Layout.setHorizontalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
    .addGap(0, 100, Short.MAX_VALUE) 
); 
jPanel1Layout.setVerticalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
    .addGap(0, 100, Short.MAX_VALUE) 
); 

nombreTxt.setText("Nombre"); 

escuelaTxt.setText("Escuela"); 

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

jButton1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 14.png")); // NOI18N 

jButton2.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 28.png")); // NOI18N 

jButton3.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 27.png")); // NOI18N 

jButton4.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 29.png")); // NOI18N 

jButton5.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 30.png")); // NOI18N 

jButton6.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 31.png")); // NOI18N 

jButton7.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 32.png")); // NOI18N 

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this); 
this.setLayout(layout); 
layout.setHorizontalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
    .addGroup(layout.createSequentialGroup() 
     .addContainerGap() 
     .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addComponent(bimestresComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
      .addGroup(layout.createSequentialGroup() 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
        .addGroup(layout.createSequentialGroup() 
         .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 15, Short.MAX_VALUE) 
         .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(layout.createSequentialGroup() 
         .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
          .addGroup(layout.createSequentialGroup() 
           .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
           .addGap(18, 18, 18) 
           .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
            .addComponent(nombreTxt) 
            .addComponent(escuelaTxt))) 
          .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)) 
         .addGap(0, 0, Short.MAX_VALUE)) 
        .addGroup(layout.createSequentialGroup() 
         .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
         .addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addGap(0, 0, Short.MAX_VALUE))) 
       .addGap(18, 18, 18) 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
        .addGroup(layout.createSequentialGroup() 
         .addGap(0, 0, Short.MAX_VALUE) 
         .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)) 
        .addGroup(layout.createSequentialGroup() 
         .addComponent(jButton6, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
         .addGap(0, 0, Short.MAX_VALUE))))) 
     .addContainerGap()) 
); 
layout.setVerticalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
    .addGroup(layout.createSequentialGroup() 
     .addContainerGap() 
     .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(layout.createSequentialGroup() 
       .addComponent(nombreTxt) 
       .addGap(18, 18, 18) 
       .addComponent(escuelaTxt)) 
      .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) 
     .addGap(18, 18, 18) 
     .addComponent(bimestresComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) 
     .addGap(18, 18, 18) 
     .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
      .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
      .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
      .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)) 
     .addGap(18, 18, 18) 
     .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false) 
      .addComponent(jButton5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE) 
      .addComponent(jButton6, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE) 
      .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)) 
     .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 26, Short.MAX_VALUE) 
     .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)) 
);   

}// </editor-fold> 




    // Variables declaration - do not modify      
    private javax.swing.JComboBox bimestresComboBox; 
    private javax.swing.JLabel escuelaTxt; 
    private javax.swing.JButton jButton1; 
    private javax.swing.JButton jButton2; 
    private javax.swing.JButton jButton3; 
    private javax.swing.JButton jButton4; 
    private javax.swing.JButton jButton5; 
    private javax.swing.JButton jButton6; 
    private javax.swing.JButton jButton7; 
    private javax.swing.JLabel jLabel1; 
    private javax.swing.JPanel jPanel1; 
    private javax.swing.JLabel nombreTxt; 
    // End of variables declaration     
} 

Answer 1

jScrollPane1.getViewport().add(item,null); 

ビューポートに3つの「項目」を追加することはできません。ビューポートには1つのコンポーネントしか追加できません。

だからあなたのロジックは次のようなものでなければなりません：JPanelはので、すべてのコンポーネントが同じ行に水平に表示されますFlowLayoutを使用して、デフォルトで

JPanel panel = new JPanel(); // specify your layout manager here 

for(int i=0;i<3;i++) 
{ 
    panel.add(new ItemCurso()); 
} 

jScrollPane1.getViewport().add(panel); 

。

Dimension（400,300）が返されるように、ItemCursoクラスにgetPreferredSize()メソッドを実装する必要があります。 setBounds（...）を使用しないでください。