Swing(2) 레이아웃

* BorderLayout

- Frame 의 기본 레이아웃
- 5개의 정해진 위치에 배치 ( 각 영역에 하나씩만 배치 가능 )
- NORTH, EAST, WEST, CENTER, SOUTH 상수값 제공
ex) BorderLayout.NORTH

package app1;

import java.awt.BorderLayout;
import java.awt.EventQueue;

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

public class Layout01_BorderLayout extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Layout01_BorderLayout frame = new Layout01_BorderLayout();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Layout01_BorderLayout() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(new BorderLayout(0, 0));
		
		JButton btnNewButton = new JButton("OK");
		contentPane.add(btnNewButton, BorderLayout.NORTH);
		
		JButton btnNewButton_1 = new JButton("OK1");
		contentPane.add(btnNewButton_1, BorderLayout.NORTH);
		
		JButton btnNewButton_2 = new JButton("OK2");
		contentPane.add(btnNewButton_2, BorderLayout.NORTH);
		
		JButton btnNewButton_3 = new JButton("OK3");
		contentPane.add(btnNewButton_3, BorderLayout.NORTH);
	}

}

 

* GridLayout

- 행과 열로 구성된 격자로 배치.

package app1;

import java.awt.EventQueue;
import java.awt.GridLayout;

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

public class Layout02_GridLayout extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Layout02_GridLayout frame = new Layout02_GridLayout();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Layout02_GridLayout() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		// GridLayout(int rows, int cols, int hgap, int vgap)
		contentPane.setLayout(new GridLayout(3, 3, 1, 1));
		
		JButton btnNewButton = new JButton("New button");
		contentPane.add(btnNewButton);
		
		JButton btnNewButton_1 = new JButton("New button");
		contentPane.add(btnNewButton_1);
		
		JButton btnNewButton_2 = new JButton("New button");
		contentPane.add(btnNewButton_2);
		
		JButton btnNewButton_3 = new JButton("New button");
		contentPane.add(btnNewButton_3);
		
		JButton btnNewButton_4 = new JButton("New button");
		contentPane.add(btnNewButton_4);
		
		JButton btnNewButton_5 = new JButton("New button");
		contentPane.add(btnNewButton_5);
	}

}

 

* CardLayout

- 카드가 겹치는 형태로 배치.
  한번에 단 하나의 컴포넌트만 보임.

package app1;

import java.awt.CardLayout;
import java.awt.EventQueue;

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

public class Layout03_CardLayout extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Layout03_CardLayout frame = new Layout03_CardLayout();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Layout03_CardLayout() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(new CardLayout(0, 0));
		
		JButton btnNewButton = new JButton("New button");
		contentPane.add(btnNewButton, "name_1131487399891900");
		
		JButton btnNewButton_1 = new JButton("New button");
		contentPane.add(btnNewButton_1, "name_1131498090615100");
		
		JButton btnNewButton_2 = new JButton("New button");
		contentPane.add(btnNewButton_2, "name_1131511593989200");
	}

}

 

* FlowLayout

- Panel 의 기본 레이아웃.
  왼쪽에서 오른쪽으로, 위에서 아래로 배치.

package app1;

import java.awt.EventQueue;

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

public class Layout04_FlowLayout extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Layout04_FlowLayout frame = new Layout04_FlowLayout();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Layout04_FlowLayout() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		
		JButton btnNewButton = new JButton("New button");
		contentPane.add(btnNewButton);
		
		JButton btnNewButton_1 = new JButton("New button");
		contentPane.add(btnNewButton_1);
		
		JButton btnNewButton_2 = new JButton("New button");
		contentPane.add(btnNewButton_2);
		
		JButton btnNewButton_3 = new JButton("New button");
		contentPane.add(btnNewButton_3);
		
		JButton btnNewButton_4 = new JButton("New button");
		contentPane.add(btnNewButton_4);
		
		JButton btnNewButton_5 = new JButton("New button");
		contentPane.add(btnNewButton_5);
		
		JButton btnNewButton_6 = new JButton("New button");
		contentPane.add(btnNewButton_6);
		
		JButton btnNewButton_7 = new JButton("New button");
		contentPane.add(btnNewButton_7);
	}

}

 

* AbsoluteLayout

- 사용자가 원하는 위치에 배치.

package app1;

import java.awt.EventQueue;

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

public class Layout05_AbsoluteLayout extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Layout05_AbsoluteLayout frame = new Layout05_AbsoluteLayout();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public Layout05_AbsoluteLayout() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JButton btnNewButton = new JButton("New button");
		btnNewButton.setBounds(29, 51, 91, 23);
		contentPane.add(btnNewButton);
		
		JButton btnNewButton_1 = new JButton("New button");
		btnNewButton_1.setBounds(236, 184, 91, 23);
		contentPane.add(btnNewButton_1);
		
		JButton btnNewButton_2 = new JButton("New button");
		btnNewButton_2.setBounds(12, 214, 91, 23);
		contentPane.add(btnNewButton_2);
		
		JButton btnNewButton_3 = new JButton("New button");
		btnNewButton_3.setBounds(320, 22, 91, 23);
		contentPane.add(btnNewButton_3);
	}
}