java - 如何通过循环动态添加JPanel？

Question

请我想通过循环动态添加JPanel。我尝试过像这样调用该函数:

public void Repeat() {
   for(int i = 0; i < 10; i++) {
       jPanel3.add(jPanel9);
   }
}

这是面板的源代码

javax.swing.GroupLayout jPanel12Layout = new javax.swing.GroupLayout(jPanel12);
    jPanel12.setLayout(jPanel12Layout);
    jPanel12Layout.setHorizontalGroup(
        jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel12Layout.createSequentialGroup()
            .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addGroup(jPanel12Layout.createSequentialGroup()
                    .addGap(14, 14, 14)
                    .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                        .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel12Layout.createSequentialGroup()
                            .addComponent(jLabel22)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 84, Short.MAX_VALUE)
                            .addComponent(jLabel23))
                        .addGroup(jPanel12Layout.createSequentialGroup()
                            .addComponent(jLabel24)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jLabel25)
                            .addGap(33, 33, 33)
                            .addComponent(jLabel26)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(jLabel27))
                        .addComponent(jSeparator3)))
                .addGroup(jPanel12Layout.createSequentialGroup()
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jLabel7)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(jLabel8)))
            .addGap(14, 14, 14))
    );
    jPanel12Layout.setVerticalGroup(
        jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel12Layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addComponent(jLabel22)
                .addComponent(jLabel23))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jSeparator3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(jLabel24, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jLabel25)
                        .addComponent(jLabel26)))
                .addComponent(jLabel27, javax.swing.GroupLayout.Alignment.TRAILING))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addGroup(jPanel12Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addComponent(jLabel8)
                .addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 16, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addGap(12, 12, 12))
    );

    jPanel9.add(jPanel12, new org.netbeans.lib.awtextra.AbsoluteConstraints(6, 119, 346, 100));

我已经复制并粘贴了代码，但它不起作用 This is the Panel或者动态添加 JPanel 是否还有其他逻辑

Answer 1

您确定要在面板内添加 10 个相同的组件吗？请务必检查有关正确使用面板以及在其中添加某些组件的文档。 https://docs.oracle.com/javase/tutorial/uiswing/components/panel.html