Java MigLayout 문제

Question

migLayout을 사용하여 계산기 GUI를 작성하려고하지만이 레이아웃에 익숙하지 않습니다.

내 문제는 제 GUI가 직선의 버튼이라는 것입니다.

1 2 3 + 4 5 6 - ... etc 

I would like to get 
1 2 3 + 
4 5 6 - 
7 8 etc... 

import net.miginfocom.swing.MigLayout; 
import javax.swing.*; 
import java.awt.*; 

public class Calculator1 { 

    public static void main(String args[]) { 
     JFrame frame = new JFrame("Calculator1"); 

     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.setLayout(new MigLayout()); 

     frame.add(new JTextField("            "),"wrap"); 
     frame.add(new JButton("1")); 
     frame.add(new JButton("2")); 
     frame.add(new JButton("3")); 
     frame.add(new JButton("+")); 
     frame.add(new JButton("4")); 
     frame.add(new JButton("5")); 
     frame.add(new JButton("6")); 
     frame.add(new JButton("-")); 
     frame.add(new JButton("7")); 
     frame.add(new JButton("8")); 
     frame.add(new JButton("9")); 
     frame.add(new JButton("*")); 
     frame.add(new JButton("0")); 
     frame.add(new JButton("/")); 
     frame.add(new JButton("=")); 

     frame.pack(); 
     frame.setVisible(true); 
    } 
} 

Answer 1

이 시도 :

import net.miginfocom.swing.MigLayout; 
import javax.swing.*; 
import java.awt.*; 

public class Calculator1 { 

    public static void main(String args[]) { 
     JFrame frame = new JFrame("Calculator1"); 

     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.setLayout(new MigLayout("fill, wrap 4", "[25%][25%][25%][25%]", "[shrink]")); 

     frame.add(new JTextField("            "),"span 4, wrap"); 
     frame.add(new JButton("1")); 
     frame.add(new JButton("2")); 
     frame.add(new JButton("3")); 
     frame.add(new JButton("+")); 
     frame.add(new JButton("4")); 
     frame.add(new JButton("5")); 
     frame.add(new JButton("6")); 
     frame.add(new JButton("-")); 
     frame.add(new JButton("7")); 
     frame.add(new JButton("8")); 
     frame.add(new JButton("9")); 
     frame.add(new JButton("*")); 
     frame.add(new JButton("0")); 
     frame.add(new JButton("/")); 
     frame.add(new JButton("=")); 

     frame.pack(); 
     frame.setVisible(true); 
    } 
}