[ JAVA ] GUI기반 덧셈, 곱셈 문제 생성기 프로그램 만들기 (난수 이용)

GUI기반 덧셈, 곱셈 문제 생성기 프로그램 만들기 (난수 이용)

 

프로그램 GUI

 

 

 

 

 

 

전체 코드

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

public class Swt33 extends JFrame implements ActionListener{

	JLabel l1,l2, l3;
	JTextField tf;
	JButton b1,b2;
	JComboBox<String> jb;
	JRadioButton r1,r2;
	int result;
	
	Swt33(){
		super("구몬 수학");
		l1=new JLabel("문제"); 
		l3=new JLabel(" = ");
		
		r1=new JRadioButton("덧셈", true); 
		r2=new JRadioButton("곱셈");
		ButtonGroup p=new ButtonGroup();
		p.add(r1); p.add(r2);
		b1=new JButton("Start");
		b1.addActionListener(this);
		jb=new JComboBox<String>(); 
		jb=new JComboBox(); jb.addItem("1학년"); jb.addItem("3학년"); jb.addItem("5학년");
		
		tf=new JTextField(10);
		b2=new JButton("정답");
		b2.addActionListener(new Re());
		l2=new JLabel("맞았습니다(틀렸습니다)");
		 
		

		JPanel p1=new JPanel();
		p1.setLayout(new FlowLayout());
		p1.add(r1); p1.add(r2); p1.add(b1);
		
		JPanel p2=new JPanel();
		p2.setLayout(new FlowLayout());
		p2.add(jb);
		
		JPanel p3=new JPanel();
		p3.setLayout(new FlowLayout());
		p3.add(l1); p3.add(tf);
		
		JPanel p4=new JPanel();
		p4.setLayout(new FlowLayout());
		p4.add(b2);
		
		JPanel p5=new JPanel();
		p5.setLayout(new BorderLayout());
		p5.add("North", p2); p5.add("Center", p3); p5.add("South", p4);
			
		JPanel p6=new JPanel();
		p6.setLayout(new FlowLayout());
		p6.add("Center",l2);
		
		this.setLayout(new BorderLayout());
		this.add("North",p1); this.add("Center",p5);
		this.add("South",p6);

		
		this.setDefaultCloseOperation(3);	//JFrame.EXIT_ON_CLOSE
		this.pack();
		this.setVisible(true);
	}
	
	class Re implements ActionListener{
		@Override
		public void actionPerformed(ActionEvent e) {
			String s=tf.getText();
			int i=Integer.parseInt(s);
			if(result==i)
				l2.setText("정답입니다");
			else
				l2.setText("다시 하세요");
		}
	}
	
	public static void main(String[] args) {
		new Swt33();
	}
	
	@Override
	public void actionPerformed(ActionEvent e) {
		String s=(String)jb.getSelectedItem();
		int a=10; //1학년
		if(s.equals("3학년")) a=50;
		else if(s.equals("5학년")) a=100;
		
		int n1=(int)(Math.random()*a+1);
		int n2=(int)(Math.random()*a+1);
		
		if(r1.isSelected()) {
			l1.setText(n1+"+"+n2);
			result=n1+n2;
		} else {
			l1.setText(n1+"*"+n2);
			result=n1*n2;
		}
		
	}//this action

}