This is the 23rd day of my participation in the First Challenge 2022

Java Programming graphical User Interface

The container

In addition to the JFrame representation, there are several other common forms: JPanel, JSplitPane, JTabbedPane, JScrollPane, JDesktopPane, JInternalFrame, and so on

JPanel

JPanel is also one of the most commonly used containers, which can be used to complete a variety of complex interface display. You can add any component to a JPanel, and then add the JPanel container directly to the JFrame container to display

import javax.swing.*;

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        JPanel pan = new JPanel();
        pan.add(new JLabel("A"));
        pan.add(new JButton("A"));
        pan.add(new JLabel("B"));
        pan.add(new JButton("B"));
        frame.add(pan);
        frame.pack();
        frame.setLocation(300.200);
        frame.setVisible(true); }}Copy the code

All components are added sequentially to the JPanel

JSplitPane

The main function of JSplitPane is to split the panel, which can divide a form into two sub-forms, either horizontally or vertically

constant

methods

import javax.swing.*;
import java.awt.*;

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        Container cont = frame.getContentPane();
// Get the form container
        JSplitPane lf = null;
        JSplitPane tb = null;
        lf=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,new JLabel("Left"),new JLabel("Right"));
        tb=new JSplitPane(JSplitPane.VERTICAL_SPLIT,lf,new JLabel("Under"));
        tb.setDividerSize(10);
        tb.setOneTouchExpandable(true);
        cont.add(tb);
        frame.setSize(300.200);
        frame.setLocation(300.200);
        frame.setVisible(true); }}Copy the code

The length of the partition line on the left and right panels is relatively small

The length of the dividing line of the upper and lower panel is larger

Has quick expansion/collapse function

JTabbedPane

JTabbedPane is a panel with multiple tabs

constant

methods

import javax.swing.*;
import java.awt.*;

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        Container cont = frame.getContentPane();
        JTabbedPane tab = null;
        tab = new JTabbedPane(JTabbedPane.TOP);
        JPanel p1= new JPanel();
        JButton b1 = new JButton("1");
        p1.add(b1);
        JPanel p2= new JPanel();
        JButton b2 = new JButton("2");
        p2.add(b2);
        tab.addTab("一",p1);
        tab.addTab("二",p2);
        cont.add(tab);
        frame.setSize(300.200);
        frame.setLocation(300.200);
        frame.setVisible(true); }}Copy the code

Two tabs are created and placed at the top of the form

Each TAB adds a JPanel panel

JScrollPane

The main function is to add horizontal scroll bars to display content

import javax.swing.*;
import java.awt.*;

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        Container cont = frame.getContentPane();
        String Path="C:\\Users\\30452\\Desktop\\123.jpg";
        Icon icon = new ImageIcon(Path);
        JPanel pan = new JPanel();
        JLabel lab = new JLabel(icon);
        pan.add(lab);
        JScrollPane s = null;
        s = new JScrollPane(pan,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        cont.add(s);
        frame.setSize(200.500);
        frame.setLocation(300.200);
        frame.setVisible(true); }}Copy the code

JDesktopPane and JInternalFrame

JDesktopPane specifies the basic form of a parent form, and JInternalFrame specifies the child forms to which jInternalFrames need to be added

Common methods of the JDesktopPane class

Common methods of the JInternalFrame class

import javax.swing.*;
import java.awt.*;

public class Hello {
    public static void main(String[] args) {
        JFrame frame = new JFrame("一");
        frame.setLayout(new BorderLayout());
        Container cont = frame.getContentPane();
        JDesktopPane desk = new JDesktopPane();
        cont.add(desk,BorderLayout.CENTER);
        JInternalFrame jif = null;
        String Path = "C:\\Users\\30452\\Desktop\\123.jpg";
        Icon icon = new ImageIcon(Path);
        JPanel pan = null;
        for(int i=0; i<2; i++){ jif =new JInternalFrame("test".true.true.true.true);
            pan = new JPanel();
            pan.add(new JLabel(icon));
            jif.setLocation(35-i*20.35-i*20);
            jif.add(pan);
            jif.pack();
            jif.setVisible(true);
            desk.add(jif);
        }
        frame.setSize(600.800);
        frame.setLocation(300.200);
        frame.setVisible(true); }}Copy the code