动态地将内容添加到java swing jpanel

Question

I am new to java. I was Developing apps in c# in past. I am using NetBeans gui designer. I have created a new JFrame in which layout is set to group layout in which there's scrollpane. I am adding components on runtime by using following code.

MyScrollPane.add(new javax.swing.JButton("Button1");
MyScrollPane.add(new javax.swing.JCheckBox("CheckBox1");
this.revalidate();

The problem is that these components are not showing in scrollpane. Another problem is that there is no option for absolute layout. Because I want to generate a scrollable list which will get values from database and generate list at runtime.

Answer 1

NetBeans gui designer leverages GroupLayout to facilitate building of UIs. Adding components to this layout manager at runtime involves adding horizontal & vertical sequential groups which can be quite complex. A good reason to start coding using standard layout managers when starting starting out.

Answer 2

You shouldn't be adding anything to a JScrollPane (I assume MyScrollPane is a JScrollPane). Your buttons should be added the JPanel that is the view of the scroll pane.