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Updated on 2025-04-05

Summary of three commonly used layout methods in Java

Summary of three commonly used layout methods in Java

Updated: February 7, 2025 10:51:06 Author: Hiking Monk
In Java Swing and JavaFX, Layout Managers are used to control the position and size of components (such as buttons, text boxes, etc.) in containers (such as windows, panels, etc.). The following introduces three commonly used layout methods in Java Swing. Friends who need it can refer to it.

1. FlowLayout (stream layout)

  • Features：FlowLayoutis one of the easiest layout managers that arrange components in order from left to right and top to bottom. When one line cannot put more components, the line wraps will be automatically wrapped.
  • Applicable scenarios: Suitable for situations where there are not many components and no complex alignment is required.
  • Sample code：
import .*;
import .*;
 
public class FlowLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("FlowLayout Example");
        (JFrame.EXIT_ON_CLOSE);
        (300, 200);
 
        // Set the layout manager to FlowLayout        (new FlowLayout());
 
        // Add components        (new JButton("Button 1"));
        (new JButton("Button 2"));
        (new JButton("Button 3"));
 
        // Display window        (true);
    }
}

2. BorderLayout (Border Layout)

  • Features：BorderLayoutDivide the container into five areas: North, South, East, West and Center. There can only be only one component per area.
  • Applicable scenarios: Suitable for situations where components need to be placed in a fixed position in the window, such as title bar, status bar, etc.
  • Sample code：
import .*;
import .*;
 
public class BorderLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("BorderLayout Example");
        (JFrame.EXIT_ON_CLOSE);
        (300, 200);
 
        // Set the layout manager to BorderLayout        (new BorderLayout());
 
        // Add components        (new JButton("North"), );
        (new JButton("South"), );
        (new JButton("East"), );
        (new JButton("West"), );
        (new JButton("Center"), );
 
        // Display window        (true);
    }
}

3. GridLayout

  • Features：GridLayoutDivide the container into a rectangular grid, each component occupies one cell, and all cells are the same size.
  • Applicable scenarios: Suitable for situations where components need to be evenly distributed in a grid, such as calculator interface.
  • Sample code：
import .*;
import .*;
 
public class GridLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("GridLayout Example");
        (JFrame.EXIT_ON_CLOSE);
        (300, 200);
 
        // Set the layout manager to GridLayout, 3 rows and 3 columns        (new GridLayout(3, 3));
 
        // Add components        for (int i = 1; i <= 9; i++) {
            (new JButton("Button " + i));
        }
 
        // Display window        (true);
    }
}

Summarize

  • FlowLayout: Simple and easy to use, suitable for situations where there are fewer components and no complex alignment is required.
  • BorderLayout: Suitable for situations where components need to be placed in a fixed position.
  • GridLayout: Suitable for situations where components need to be evenly distributed in the grid.

This is the end of this article about the summary of three commonly used layout methods in Java. For more relevant content on common layout methods in Java, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!

  • Java
  • layout

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