• 문제풀이/명품 자바 프로그래밍(개정4판)

    명품 자바 프로그래밍(개정4판) 제 11장 실습문제

    2020. 12. 7.

    by. Hyeon-Uk

    반응형

    [1번]

    import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;

class MyFrame extends JFrame{
	public MyFrame() {
		setTitle("CheckBox Practice Frame");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new FlowLayout());
		
		JCheckBox b1,b2;
		b1=new JCheckBox("버튼 비활성화");
		b2=new JCheckBox("버튼 감추기");
		JButton btn1=new JButton("test button");
		b1.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent e) {
				// TODO Auto-generated method stub
				if(e.getStateChange()==ItemEvent.SELECTED) {
					btn1.setEnabled(false);
				}
				else {
					btn1.setEnabled(true);
				}
			}
		});
		b2.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent e) {
				// TODO Auto-generated method stub
				if(e.getStateChange()==ItemEvent.SELECTED) {
					btn1.setVisible(false);
				}
				else {
					btn1.setVisible(true);
				}
			}
		});
		
		
		c.add(b1);
		c.add(b2);
		c.add(btn1);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1101 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [2번]

    import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTextField;

class MyFrame extends JFrame{
	JTextField jt=new JTextField(10);
	JComboBox jc=new JComboBox();
	public MyFrame() {
		setTitle("JTextField and JComboBox");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new FlowLayout());
		
		jt.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				JTextField j=(JTextField)e.getSource();
				String temp=j.getText();
				j.setText("");
				jc.addItem(temp);
			}
		});
		
		c.add(jt);
		c.add(jc);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1102 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [3번]

    import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

class MyFrame extends JFrame{
	JButton cal;
	JTextField input;
	JLabel money[]=new JLabel[8];
	String moneytag[]= {"오만원","만원","천원","500원","100원","50원","10원","1원"};
	int moneys[]= {50000,10000,1000,500,100,50,10,1};
	JTextField result[]=new JTextField[8];
	public MyFrame() {
		setTitle("Money Changer");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new BorderLayout());
		c.setBackground(Color.pink);
		
		JPanel North=new JPanel();
		
		North.setLayout(new FlowLayout());
		North.add(new JLabel("금액"));
		input=new JTextField(10);
		cal=new JButton("계산");
		
	    cal.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int total=Integer.parseInt(input.getText());
				for(int i=0;i<8;i++) {
					result[i].setText(Integer.toString(total/moneys[i]));
					total%=moneys[i];
				}
			}
		});
		North.add(input);
		North.add(cal);
		North.setBackground(Color.pink);
		c.add(North,BorderLayout.NORTH);
		
		
		JPanel center=new JPanel();
		center.setLayout(new GridLayout(8,2));
		center.setBackground(Color.pink);
		for(int i=0;i<8;i++) {
			money[i]=new JLabel(moneytag[i]);
			result[i]=new JTextField();
			center.add(money[i]);
			center.add(result[i]);
		}
		c.add(center,BorderLayout.CENTER);
		
		
		JPanel west=new JPanel();
		west.setBackground(Color.pink);
		c.add(west,BorderLayout.WEST);
		
		JPanel east=new JPanel();
		east.setBackground(Color.pink);
		c.add(west,BorderLayout.EAST);
		
		JPanel south=new JPanel();
		south.setBackground(Color.pink);
		c.add(west,BorderLayout.SOUTH);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1103 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [4번]

    import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

class MyFrame extends JFrame{
	JButton cal;
	JTextField input;
	JLabel money[]=new JLabel[8];
	String moneytag[]= {"오만원","만원","천원","500원","100원","50원","10원","1원"};
	int moneys[]= {50000,10000,1000,500,100,50,10,1};
	JTextField result[]=new JTextField[8];
	JCheckBox check[]=new JCheckBox[7];
	public MyFrame() {
		setTitle("Money Changer with CheckBox");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new BorderLayout());
		c.setBackground(Color.pink);
		
		JPanel North=new JPanel();
		
		North.setLayout(new FlowLayout());
		North.add(new JLabel("금액"));
		input=new JTextField(10);
		cal=new JButton("계산");
		
	    cal.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int total=Integer.parseInt(input.getText());
				for(int i=0;i<7;i++) {
					if(check[i].isSelected()) {
						result[i].setText(Integer.toString(total/moneys[i]));
						total%=moneys[i];
					}
					else {
						result[i].setText("0");
					}
				}
				result[7].setText(Integer.toString(total));
			}
		});
		North.add(input);
		North.add(cal);
		North.setBackground(Color.pink);
		c.add(North,BorderLayout.NORTH);
		
		
		JPanel center=new JPanel();
		center.setLayout(new GridLayout(8,3));
		center.setBackground(Color.pink);
		for(int i=0;i<8;i++) {
			money[i]=new JLabel(moneytag[i]);
			result[i]=new JTextField();
			center.add(money[i]);
			center.add(result[i]);
			if(i<7) {
				check[i]=new JCheckBox();
				check[i].setBackground(Color.pink);
				center.add(check[i]);
			}
		}
		c.add(center,BorderLayout.CENTER);
		
		
		JPanel west=new JPanel();
		west.setBackground(Color.pink);
		c.add(west,BorderLayout.WEST);
		
		JPanel east=new JPanel();
		east.setBackground(Color.pink);
		c.add(west,BorderLayout.EAST);
		
		JPanel south=new JPanel();
		south.setBackground(Color.pink);
		c.add(west,BorderLayout.SOUTH);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1104 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [5번]

    import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class MyFrame extends JFrame{
	
	public MyFrame() {
		setTitle("JSlider Practice Frame");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new FlowLayout());
		
		JSlider js=new JSlider(100, 200, 120);
		JLabel jl=new JLabel("120");
		js.setMajorTickSpacing(20);
		js.setPaintTicks(true);
		js.setPaintLabels(true);
		js.addChangeListener(new ChangeListener() {
			public void stateChanged(ChangeEvent e) {
				JSlider temp=(JSlider)e.getSource();
				jl.setText(Integer.toString(temp.getValue()));
			}
		});
		c.add(js);
		
		jl.setBackground(Color.green);
		jl.setOpaque(true);
		c.add(jl);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1105 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}
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    [6번]

    import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JSlider;
import javax.swing.JTextArea;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class MyFrame extends JFrame{
	JSlider js=new JSlider(0,100,0);
	JTextArea jta=new JTextArea();
	public MyFrame() {
		setTitle("TextArea Practice Frame");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new GridLayout(3,1));
		
		
		js.setMajorTickSpacing(20);
		js.setMinorTickSpacing(5);
		js.setPaintLabels(true);
		js.setPaintTicks(true);
		
		js.addChangeListener(new ChangeListener() {
			public void stateChanged(ChangeEvent e) {
				JSlider temp=(JSlider)e.getSource();
				String text=jta.getText();
				if(text.length()<=js.getValue()) {
					js.setValue(text.length());
				}
				else {
					jta.setText(text.substring(0,temp.getValue()));
				}
			}
		});
		
		
		jta.addKeyListener(new KeyAdapter() {
			public void keyTyped(KeyEvent e) {
				// TODO Auto-generated method stub
				JTextArea t=(JTextArea)e.getSource();
				String text=t.getText();
				if(text.length()<=100) {
					js.setValue(text.length());
				}
				else {
					text=text.substring(0,99);
					jta.setText(text);
				}
			}
		});
		c.add(jta);
		c.add(js);
		setSize(300,300);
		setVisible(true);
	}
}

public class p1106 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [7번]

    import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

class MyFrame extends JFrame{
	JSlider js=new JSlider(1,100,56);
	JLabel jl=new JLabel("I Love Java");
	public MyFrame() {
		setTitle("JSlider Practice Frame");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new BorderLayout());
		
		js.setMajorTickSpacing(20);
		js.setMinorTickSpacing(5);
		js.setPaintLabels(true);
		js.setPaintTicks(true);
		js.setPaintTrack(true);
		
		js.addChangeListener(new ChangeListener() {
			public void stateChanged(ChangeEvent e) {
				JSlider temp=(JSlider)e.getSource();
				jl.setFont(new Font("Arial",Font.PLAIN,temp.getValue()));
			}
		});
		c.add(js,BorderLayout.NORTH);
		
		jl.setFont(new Font("Arial",Font.PLAIN,56));
		c.add(jl,BorderLayout.CENTER);
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1107 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [8번]

    import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.ButtonGroup;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;

class MyFrame extends JFrame{
	JRadioButton jb[]=new JRadioButton[2];
	//이미지 파일의 위치와 이름에 따라 달라짐
	ImageIcon image[]= {new ImageIcon("images/red.png"),new ImageIcon("images/blue.png"),new ImageIcon("images/green.png")};
	int index=0;
	JLabel jl=new JLabel(image[0]);
	public MyFrame() {
		setTitle("Image Gallery Practice Frame");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new BorderLayout());
		
		JPanel north=new JPanel();
		north.setLayout(new FlowLayout());
		jb[0]=new JRadioButton("left");
		jb[0].setSelected(true);
		jb[1]=new JRadioButton("right");
		north.add(jb[0]);
		north.add(jb[1]);
		
		ButtonGroup g=new ButtonGroup();
		g.add(jb[0]);
		g.add(jb[1]);
		
		c.add(north,BorderLayout.NORTH);
		
		
		c.add(jl,BorderLayout.CENTER);
		jl.addMouseListener(new MouseAdapter() {
			public void mouseClicked(MouseEvent e) {
				if(jb[0].isSelected()) {
					index=(index+1)%image.length;
				}
				else {
					index--;
					if(index<0) {
						index=image.length-1;
					}
				}
				jl.setIcon(image[index]);
			}
		});
		
		setSize(300,300);
		setVisible(true);
	}
}

public class p1108 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}

    [9번]

    import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class p1109 extends JFrame{	
	
	JButton btn[]=new JButton[3];
	ImageIcon img[]= {new ImageIcon("image/sissor.jpeg"),new ImageIcon("image/rock.jpeg"),new ImageIcon("image/paper.png")};
	int mySelect,comSelect;
	JLabel me=new JLabel("me");
	JLabel com=new JLabel("com");
	JLabel result=new JLabel();
	public p1109() {
		setTitle("가위 바위 보 게임");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(new BorderLayout());
		
		JPanel top=new JPanel();
		top.setLayout(new FlowLayout());
		for(int i=0;i<3;i++) {
			btn[i]=new JButton(img[i]);
			btn[i].addActionListener(new action(i));
			top.add(btn[i]);
		}
		top.setBackground(Color.DARK_GRAY);
		c.add(top,BorderLayout.NORTH);
		
		JPanel center=new JPanel();
		center.setLayout(new FlowLayout());
		center.add(me);
		center.add(com);
		center.add(result);
		center.setBackground(Color.YELLOW);
		c.add(center);
		
		setSize(1000,700);
		setVisible(true);
	}
	
	class action implements ActionListener{
		int index;
		action(int i){
			index=i;
		}
		public void actionPerformed(ActionEvent e) {
			mySelect=index;
			comSelect=(int)(Math.random()*3);
			me.setIcon(img[mySelect]);
			com.setIcon(img[comSelect]);
			if(mySelect-comSelect==0) {
				result.setText("Same !!!");
			}
			else if(mySelect-comSelect==-2||mySelect-comSelect==1) {
				result.setText("Me !!!");
			}
			else {
				result.setText("Com !!!");
			}
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new p1109();
	}

}

    [10번]

    import java.awt.Container;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.JLabel;

class MyFrame extends JFrame{
	JLabel num[]=new JLabel[10];
	int nowindex;
	public MyFrame() {
		setTitle("Ten 레이블 클릭");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c=getContentPane();
		c.setLayout(null);
		
		for(int i=0;i<10;i++) {
			num[i]=new JLabel(Integer.toString(i));
			num[i].setSize(10,10);
			num[i].addMouseListener(new MouseAdapter() {
				public void mouseClicked(MouseEvent e) {
					JLabel temp=(JLabel)e.getSource();
					int num=Integer.parseInt(temp.getText());
					if(num==nowindex) {
						temp.setVisible(false);
						nowindex++;
					}
					if(nowindex==10) {
						setting();
					}
				}
			});
			c.add(num[i]);
		}
		setting();
		
		setSize(300,300);
		setVisible(true);
	}
	
	public void setting() {
		nowindex=0;
		for(int i=0;i<10;i++) {
			int x=(int)(Math.random()*300);
			int y=(int)(Math.random()*300);
			
			num[i].setLocation(x,y);
			num[i].setVisible(true);
		}
	}
}

public class p1110 {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}
}
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