import java.awt.*; import javax.swing.*; public class Main extends JFrame{ public static void main(String[] args) { // 创建JFrame Main frame = new Main(); // frame.setTitle("这是flow布局哦"); // 设置尺寸 frame.setSize(500, 100); // JFrame在屏幕居中 frame.setLocationRelativeTo(null); // JFrame关闭时的操作 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 显示JFrame frame.setVisible(true); } public Main() { // super.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 10)); JPanel p1 = new JPanel(); p1.setSize(500,100); add(p1); p1.add(new JTextField(10)); String [] list={"+","-","*","/"}; //下拉列表 JComboBox jcombo = new JComboBox(list); //实例化下拉列表 p1.add(jcombo); p1.add(new JTextField(10)); p1.add(new JButton("=")); p1.add(new JTextField(10)); } }
简单flow布局下拉小选框
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转载自blog.csdn.net/qq_38912284/article/details/80038459
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