使用AbsoluteLayout來佈置元件的相對位置

package test.swing.layout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;

public class TestAbsoluteLayout extends JFrame {
 
 private JPanel contentPane;

 public static void main(String[] args) {
  TestAbsoluteLayout frame = new TestAbsoluteLayout();
  frame.setVisible(true);
 }
 
 public TestAbsoluteLayout(){
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  setBounds(100, 100, 450, 300);   //(左邊界,上邊界,宽度,長度)
  contentPane = new JPanel();
  contentPane.setBorder(new EmptyBorder(10, 10, 10, 10));   //(上,左,下,右)
  setContentPane(contentPane);
  
  //當Layout設定為null代表以絕對路徑方式描述components之間的關係
  contentPane.setLayout(null);
  
  JButton btnNewButton = new JButton("提交");
  btnNewButton.setBounds(10, 10, 87, 23);   //(左邊界,上邊界,宽度,長度)
  contentPane.add(btnNewButton);
  
  JLabel lblNewLabel = new JLabel("顯示文字標籤!");
  lblNewLabel.setBounds(300, 237, 100, 15);   //(左邊界,上邊界,宽度,長度)
  contentPane.add(lblNewLabel);
 }

}

執行結果