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명품 JAVA Programming 제 12장 실습문제 (3~4 제외) 본문

Java

명품 JAVA Programming 제 12장 실습문제 (3~4 제외)

_mojo_ 2021. 8. 4. 16:41

1번 문제 code

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
	private Image img = icon.getImage();
	int op=0;
	
	MyFrame(){
		setTitle("12장 Open Challenge");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		MyButton b =new MyButton("hide/Show");
		b.setOpaque(true);
		b.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if(op==0) {
					op=1;
					icon = new ImageIcon("");
					img = icon.getImage();
				}
				else {
					op=0;
					icon = new ImageIcon("C:\\\\Temp/lion.gif");
					img = icon.getImage();
				}
				
				repaint();
			}
		});
		c.add(b);
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyButton extends JButton{
		public MyButton(String s) {
			super(s);
		}
	}
	
	class MyPanel extends JPanel{
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			g.drawImage(img, 0, 0, getWidth(), getHeight(), this);		
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

2번 문제 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Point p = new Point(-100,-100);
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addMouseMotionListener(new MouseMotionAdapter() {
			public void mouseDragged(MouseEvent e) {
				p.x = e.getX();
				p.y = e.getY();		
				repaint();
			}
		});
		
		addMouseListener(new MouseAdapter() {
			public void mouseReleased(MouseEvent e) {
				p.x = -100;
				p.y = -100;
				repaint();
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			g.drawImage(img, 0, 0, getWidth(), getHeight(), this);		
		
			g.setColor(Color.GREEN);
			g.fillOval(p.x-20, p.y-40, 30, 30);
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

5번 code

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Point p = new Point(30,30);
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addKeyListener(new KeyAdapter() {
			public void keyPressed(KeyEvent e) {
				char c = e.getKeyChar();
				if(c == '+') {
					p.x += (int)(p.x * 0.1);
					p.y += (int)(p.y * 0.1);
				}
				else if(c == '-') {
					p.x -= (int)(p.x * 0.1);
					p.y -= (int)(p.y * 0.1);
				}
				repaint();
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			g.drawImage(img, 10, 10, p.x, p.y, this);		
		
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

6 - (1) 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Point p = new Point(30,30);
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addKeyListener(new KeyAdapter() {
			public void keyPressed(KeyEvent e) {
				char c = e.getKeyChar();
				if(c == '+') {
					p.x += (int)(p.x * 0.1);
					p.y += (int)(p.y * 0.1);
				}
				else if(c == '-') {
					p.x -= (int)(p.x * 0.1);
					p.y -= (int)(p.y * 0.1);
				}
				repaint();
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			
			for(int i=1;i<=10;i++) {
				int x = getWidth() * i / 11;
				int y = getHeight() * i / 11;
				g.drawLine(x, 0, x, getHeight());
				g.drawLine(0, y, getWidth(), y);
			}
		
			repaint();
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

6 - (2) 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Point p = new Point(30,30);
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addKeyListener(new KeyAdapter() {
			public void keyPressed(KeyEvent e) {
				char c = e.getKeyChar();
				if(c == '+') {
					p.x += (int)(p.x * 0.1);
					p.y += (int)(p.y * 0.1);
				}
				else if(c == '-') {
					p.x -= (int)(p.x * 0.1);
					p.y -= (int)(p.y * 0.1);
				}
				repaint();
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			
			for(int i=1;i<=10;i++) {
				int gap = 10*(i-1);
				int x[] = {gap, getWidth()/2, getWidth()-gap, getWidth()/2};
				int y[] = {getHeight()/2, gap, getHeight()/2, getHeight()-gap};
				for(int j=0; j<4; j++) {
					g.drawLine(x[j], y[j], x[j+1==4?0:j+1], y[j+1==4?0:j+1]);
				}
			}
		
			repaint();
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

7번 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Vector<Point> v = new Vector<Point>();
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				int x = e.getX();
				int y = e.getY();
				v.add(new Point(x,y));
			
				repaint();
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			
			if(v.size() >= 2) {
				for(int i=0; i<v.size(); i++) {
					int x1 = v.get(i).x, y1 = v.get(i).y;
					int x2 = v.get(i+1 == v.size() ? 0 : i+1).x;
					int y2 = v.get(i+1 == v.size() ? 0 : i+1).y;
					g.drawLine(x1, y1, x2, y2);
				}
			}
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

8번 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	private Vector<Point> []v = new Vector[100];
	private Vector<Point> tmp = new Vector<Point>();
	private int size = 0, drag_Op = -1;
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		addMouseMotionListener(new MouseMotionAdapter() {
			public void mouseDragged(MouseEvent e) {
				tmp.add(new Point(e.getX(),e.getY()));
				repaint();
				drag_Op=1;
			}
		});
		
		addMouseListener(new MouseAdapter() {
			
			public void mouseReleased(MouseEvent e) {
				v[size] = new Vector<Point>();
				int x1 = tmp.get(0).x, y1 = tmp.get(0).y;
				int x2 = tmp.get(tmp.size()-1).x, y2 = tmp.get(tmp.size()-1).y;
				v[size].add(new Point(x1,y1));
				v[size].add(new Point(x2,y2));
				tmp.clear();
				
				repaint();
				size++;
				drag_Op=0;
			}
		});
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
			
			if(drag_Op==1 && tmp.size()>=2) {
				int firstX = tmp.get(0).x, firstY = tmp.get(0).y;
				int endX = tmp.get(tmp.size()-1).x, endY = tmp.get(tmp.size()-1).y;
				int width = endX-firstX, height = endY-firstY;
				g.drawOval(firstX, firstY, width, height);
			}
			
			if(size>=1) {
				for(int i=0; i<size; i++) {
					int firstX = v[i].get(0).x, firstY = v[i].get(0).y;
					int endX = v[i].get(1).x, endY = v[i].get(1).y;
					int width = endX-firstX, height = endY-firstY;
					g.drawOval(firstX, firstY, width, height);
				}
			}
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

9번 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		Container c = getContentPane();
		c.setLayout(new FlowLayout());
		
		JLabel la1 = new BlueLabel(10, Color.YELLOW);
		JLabel la2 = new BlueLabel(50, Color.RED);
		
		la1.setText("hello");
		la2.setText("Big Hello");
		
		c.add(la1);
		c.add(la2);
		
		la2.setBackground(Color.RED);
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class BlueLabel extends JLabel{
		public BlueLabel(int size, Color c) {
			super.setFont(new Font("Arial",Font.ITALIC,size));
			super.setBackground(Color.blue);
			super.setForeground(c);
			super.setOpaque(true);
		}
		
		public void setBackground(Color c) {
			super.setBackground(Color.blue);
		}
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

10번 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private MyPanel panel = new MyPanel();
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		setContentPane(panel);
		
		setSize(400, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	class MyPanel extends JPanel{
		
		private ImageIcon icon = new ImageIcon("C:\\\\Temp/lion.gif");
		private Image img = icon.getImage();
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);	
			
			g.drawImage(img, 0, 0, getWidth()/2-5, getHeight()/2-5, 
					0, 0, img.getWidth(this)/2-5, img.getHeight(this)/2-5, this);
			g.drawImage(img, getWidth()/2+5, 0, getWidth(), getHeight()/2-5, 
					img.getWidth(this)/2+5, 0, img.getWidth(this), img.getHeight(this)/2-5, this);
			g.drawImage(img, 0, getHeight()/2+5, getWidth()/2-5, getHeight(), 
					0, img.getHeight(this)/2+5, img.getWidth(this)/2-5, img.getHeight(this), this);
			g.drawImage(img, getWidth()/2+5, getHeight()/2+5, getWidth(), getHeight(), 
					img.getWidth(this)/2+5, img.getHeight(this)/2+5, img.getWidth(this), img.getHeight(this), this);
		}
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

 

 

 

11번 코드

 

import javax.swing.*; // JFrame
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*; // Container
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.util.Vector;
import java.awt.*;

public class MyFrame extends JFrame{

	private JTextField tf[] = new JTextField[4];
	private JLabel la[] = new JLabel[4];
	private JLabel la1[] = new JLabel[4];
	private String fruits[] = {"apple","cherry","strawberry","prune"};
	private int percent[] = new int[4];
	private int sum = 0;
	
	class MyActionListener implements ActionListener{
		public void actionPerformed(ActionEvent e) {
			int arr[] = new int[4];
			sum = 0;
			for(int i=0; i<4; i++) {
				arr[i] = Integer.parseInt(tf[i].getText());
				sum += arr[i];
			}
			
			if(sum!=0) {
				int tmpSum = 0;
				
				for(int i=0; i<4; i++) {
					percent[i] = (int)(((double)arr[i]/(double)sum) * 100);
					tmpSum += percent[i];
				}
				
				if(tmpSum != 100) percent[3] += (100-tmpSum);
				
				for(int i=0; i<4; i++) {
					la1[i].setText(fruits[i]+" "+Integer.toString(percent[i])+"%");
				}
			}
			
			repaint();
		}
	}
	
	class NorthPanel extends JPanel{
		
		NorthPanel() {
			setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
			setBackground(Color.LIGHT_GRAY);
			
			for(int i=0; i<4; i++) {
				la[i] = new JLabel(fruits[i]);
				add(la[i]);
				tf[i] = new JTextField(Integer.toString(0), 6);
				tf[i].addActionListener(new MyActionListener());
				add(tf[i]);
			}
		}
	}
	
	class CenterPanel extends JPanel{
		
		private int arr[] = new int[4];
		
		CenterPanel(){
			setLayout(new FlowLayout(FlowLayout.CENTER,15,10));
			
			for(int i=0; i<4; i++) {
				arr[i] = Integer.parseInt(tf[i].getText());
				la1[i] = new JLabel(fruits[i]+" %");
				la1[i].setForeground(Color.BLACK);
				add(la1[i]);
			}
		}
		
		public void paintComponent(Graphics g) {
			super.paintComponent(g);			
		
			if(sum!=0) {
				int before = 0;
				
				for(int i=0; i<4 ;i++) {
					arr[i] = before + (int)(percent[i]*3.6);
					before = arr[i];
					System.out.println(arr[i]);
				}
				
				la1[0].setForeground(Color.RED); la1[1].setForeground(Color.BLUE);
				la1[2].setForeground(Color.MAGENTA); la1[3].setForeground(Color.YELLOW);
				
				g.setColor(Color.RED);
				g.fillArc(200, 50, 200, 200, 0, arr[0]);
				g.setColor(Color.BLUE);
				g.fillArc(200, 50, 200, 200, arr[0], arr[1]-arr[0]);
				g.setColor(Color.MAGENTA);
				g.fillArc(200, 50, 200, 200, arr[1], arr[2]-arr[1]);
				g.setColor(Color.YELLOW);
				g.fillArc(200, 50, 200, 200, arr[2], arr[3]-arr[2]);
			}
			else {
				g.setColor(Color.BLACK);
				g.fillArc(200, 50, 200, 200, 0, 360);
			}
		}
	}
	
	MyFrame(){
		setTitle("12장 연습하기");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Container c = getContentPane();
		c.setLayout(new BorderLayout());
		
		c.add(new NorthPanel(), BorderLayout.NORTH);
		c.add(new CenterPanel(), BorderLayout.CENTER);
		
		setSize(600, 400); 
		setVisible(true); 
		
		setFocusable(true);
		requestFocus();
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new MyFrame();
	}

}

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