세쨋 날(내부 클래스오 무명클래스 차이점 과제하기)

EX) 박스 레이아웃

import java.awt.Color;
import java.awt.Component;

import javax.swing.*;

class MyFrame extends JFrame
{
 public MyFrame()
 {
  setSize(600, 400);
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  setTitle("MyFrame");
  JPanel panel = new JPanel();
  
  panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
  
  makeButton(panel, "Button1");
  makeButton(panel, "Button2");
  makeButton(panel, "Button3");
  makeButton(panel, "B4");
  
  
  add(panel);  
  setVisible(true);
 }
 
 private void makeButton(JPanel panel, String text)
 {
  JButton button = new JButton(text);
  button.setAlignmentX(Component.CENTER_ALIGNMENT);
  panel.add(button);
 }
}

public class class1
{
 public static void main(String[] args)
 {
  MyFrame f = new MyFrame();
 }

}

* 절대위치로 배치하기

1. 배치관리자를 Null로 설정한다.

- setlayout(null);

2. add() 메소드를 사용하여 컴포넌트를 컨테이너에 추가한다.

- 

3. 절대위치를 사용

- setbounds();

4. 컴포넌트의 

EX) 절대위치

import java.awt.Color;

import java.awt.Component;

import javax.swing.*;

class MyFrame extends JFrame

{

JButton b1;

private JButton b2, b3; 

public MyFrame()

{

setSize(600, 400);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setTitle("MyFrame");

JPanel panel = new JPanel();

panel.setLayout(null);

b1 = new JButton("Button 1");

panel.add(b1);

b2 = new JButton("Button 2");

panel.add(b2);

b3 = new JButton("Button 3");

panel.add(b3);

b1.setBounds(20, 5, 95, 30);

b2.setBounds(55, 45, 105, 70);

b3.setBounds(180, 15, 105, 90);

add(panel);

setVisible(true);

}

}

public class class1 

{

public static void main(String[] args) 

{

MyFrame f = new MyFrame();

}

}

19장 

Lab 1_0

import java.awt.Color;

import java.awt.Component;

import java.awt.FlowLayout;

import javax.swing.*;

class MyFrame extends JFrame

{

JButton b1;

private JButton b2, b3; 

public MyFrame()

{

setSize(300, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setTitle("MyFrame");

JPanel panel = new JPanel();

panel.setLayout(new FlowLayout());

for(int i=0; i<=9; i++)

panel.add(new JButton("Button" + (char)('0'+i)));

add(panel);

setVisible(true);

}

}

public class class1 

{

public static void main(String[] args) 

{

MyFrame f = new MyFrame();

}

}

Lab 1_1

import java.awt.BorderLayout;

import javax.swing.*;

class MyFrame extends JFrame

{

JButton b1;

private JButton b2, b3; 

public MyFrame()

{

setSize(300, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setTitle("MyFrame");

JPanel panel = new JPanel();

panel.setLayout(new BorderLayout());

for(int i=0; i<=9; i++)

panel.add(new JButton("Button" + (char)('0'+i)));

add(panel);

setVisible(true);

}

}

public class class1 

{

public static void main(String[] args) 

{

MyFrame f = new MyFrame();

}

}

Lab 1_2

import java.awt.GridLayout;

import javax.swing.*;

class MyFrame extends JFrame

{

JButton b1;

private JButton b2, b3; 

public MyFrame()

{

setSize(300, 200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setTitle("MyFrame");

JPanel panel = new JPanel();

panel.setLayout(new GridLayout());

for(int i=0; i<=9; i++)

panel.add(new JButton("Button" + (char)('0'+i)));

add(panel);

setVisible(true);

}

}

public class class1 

{

public static void main(String[] args) 

{

MyFrame f = new MyFrame();

}

}

Lab 1_3

Lab2