[Java] Class Test ๐Ÿ”ซ

soyeonยท2022๋…„ 7์›” 12์ผ
Java์นด์นด์˜คํด๋ผ์šฐ๋“œ์Šค์ฟจ
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Java_์นด์นด์˜คํด๋ผ์šฐ๋“œ

๋ชฉ๋ก ๋ณด๊ธฐ
7/15
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๋ฌธ์ œ 1

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  • ๋‚ด ์ฝ”๋“œ
package com.uni;

public class Human {
	
	private String name;
	private int age;
	private int height;
	private int weight;
	
	public Human() {
		
	}
	
	public Human(String name, int age, int height, int weight) {
		this.name = name;
		this.age = age;
		this.height = height;
		this.weight = weight;
	}
	
	public String printInformation() {
		return this.getName() + " " + this.getAge() + "  "+ this.getHeight() + "  "+ this.getWeight();
 	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public int getHeight() {
		return height;
	}

	public void setHeight(int height) {
		this.height = height;
	}

	public int getWeight() {
		return weight;
	}

	public void setWeight(int weight) {
		this.weight = weight;
	}
	
}
package com.uni;

public class Student extends Human {
	
	private String number;
	private String major;
	
	public Student() {
		
	}
	
	public Student(String name, int age, int height, int weight, String number, String major) {
		super(name, age, height, weight);
		this.number = number;
		this.major = major;
	}
	
	public String printInformation() {
		return this.getName() + " " + this.getAge() + "  "+ this.getHeight() + "  "+ this.getWeight() + " "+ this.getNumber() + " "+ this.getMajor();
	}

	public String getNumber() {
		return number;
	}

	public void setNumber(String number) {
		this.number = number;
	}

	public String getMajor() {
		return major;
	}

	public void setMajor(String major) {
		this.major = major;
	}
}
package com.uni;

public class StudentTest {
	
	public static void main(String[] args) {
		Student arrays [] = new Student[3];
		arrays[0] = new Student("ํ™๊ธธ๋™", 15, 171, 81, "201101", "์˜๋ฌธ");
		arrays[1] = new Student("ํ•œ์‚ฌ๋žŒ", 13, 183, 72, "201102", "๊ฑด์ถ•");
		arrays[2] = new Student("ํ™๊ธธ๋™", 16, 175, 65, "201103", "๋ฌด์šฉ");
	
		for(int i=0; i<3; i++) {
			System.out.println(arrays[i].printInformation());
		}
		
	}

}

์‹คํ–‰ ๊ฒฐ๊ณผ : ํ™๊ธธ๋™ 15  171  81 201101 ์˜๋ฌธ
		   ํ•œ์‚ฌ๋žŒ 13  183  72 201102 ๊ฑด์ถ•
		   ํ™๊ธธ๋™ 16  175  65 201103 ๋ฌด์šฉ

๋ฌธ์ œ 2

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  • ๋‚ด ์ฝ”๋“œ
package planetest;

public abstract class Plane {
	
	private String planeName;
	private int fuelSize;
	
	public Plane() {
		
	}
	
	public Plane(String planeName, int fuelSize) {
    	super();
		this.planeName = planeName;
		this.fuelSize = fuelSize;
	}
	
	public void refuel(int fuel) {
		this.fuelSize += fuel;
        // this.setFuelSize(this.getFuelSize() + fuel);
        // ์ด ๋ฐฉ๋ฒ•์„ ์‚ฌ์šฉํ•˜๋Š” ๊ฒƒ์ด ์ข‹๋‹ค.
	}
	
	public abstract void flight(int distance);

	public String getPlaneName() {
		return planeName;
	}

	public void setPlaneName(String planeName) {
		this.planeName = planeName;
	}

	public int getFuelSize() {
		return fuelSize;
	}

	public void setFuelSize(int fuelSize) {
		this.fuelSize = fuelSize;
	}	
}
package planetest;

public class Airplane extends Plane{
	
	Airplane() {
		
	}
	
	Airplane(String planeName, int fuelSize) {
		super(planeName, fuelSize);
	}

	@Override
	public void flight(int distance) {
		int curFuleSize = this.getFuelSize();
		this.setFuelSize(curFuleSize - distance * 3);		
	}
	
}
package planetest;

public class Cargoplane extends Plane{
	
	Cargoplane() {
		
	}
	
	Cargoplane(String planeName, int fuelSize) {
		super(planeName, fuelSize);
	}

	@Override
	public void flight(int distance) {
		int curFuleSize = this.getFuelSize();
		this.setFuelSize(curFuleSize - distance * 5);		
	}
}
package planetest;

public class PlaneTest {
	
	public static void main(String[] args) {
		// Airplane๊ณผ Cargoplane ๊ฐ์ฒด ์ƒ์„ฑ
		Airplane airplane = new Airplane("L747", 1000);
		Cargoplane cargoplane = new Cargoplane("C40", 1000);
		
		// ์ƒ์„ฑ๋œ ๊ฐ์ฒด์˜ ์ •๋ณด ์ถœ๋ ฅ
		System.out.println(" Plane     fuelSize");
		System.out.println("---------------------");
		System.out.println(" " + airplane.getPlaneName() + "       " + airplane.getFuelSize());
		System.out.println(" " + cargoplane.getPlaneName() + "        " + cargoplane.getFuelSize());
		
		// Airplane๊ณผ Cargoplane ๊ฐ์ฒด์— 100์”ฉ ์šดํ•ญ
		System.out.println();
		System.out.println("100 ์šดํ•ญ");
		airplane.flight(100);
		cargoplane.flight(100);
		
		// ์šดํ•ญ ํ›„ ๊ฐ์ฒด์˜ ๋ณ€๊ฒฝ๋œ ์ •๋ณด ์ถœ๋ ฅ
		System.out.println(" Plane     fuelSize");
		System.out.println("---------------------");
		System.out.println(" " + airplane.getPlaneName() + "       " + airplane.getFuelSize());
		System.out.println(" " + cargoplane.getPlaneName() + "        " + cargoplane.getFuelSize());
		
		// Airplane๊ณผ Cargoplane ๊ฐ์ฒด์— 200์”ฉ ์ฃผ์œ 
		System.out.println();
		System.out.println("200 ์ฃผ์œ ");
		airplane.refuel(200);
		cargoplane.refuel(200);
		
		// ์ฃผ์œ  ํ›„ ๊ฐ์ฒด์˜ ๋ณ€๊ฒฝ๋œ ์ •๋ณด ์ถœ๋ ฅ
		System.out.println(" Plane     fuelSize");
		System.out.println("---------------------");
		System.out.println(" " + airplane.getPlaneName() + "       " + airplane.getFuelSize());
		System.out.println(" " + cargoplane.getPlaneName() + "        " + cargoplane.getFuelSize());
	
	}
}

๋ฌธ์ œ 3

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package com.computer;

public abstract class Computer {

	private String name;
	private int cpu;
	private int memory;
	private int battery;
	
	public Computer() {
		
	}

	public Computer(String name, int cpu, int memory, int battery) {
		super();
		this.name = name;
		this.cpu = cpu;
		this.memory = memory;
		this.battery = battery;
	}
	
	public abstract void opearate(int time);

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getCpu() {
		return cpu;
	}

	public void setCpu(int cpu) {
		this.cpu = cpu;
	}

	public int getMemory() {
		return memory;
	}

	public void setMemory(int memory) {
		this.memory = memory;
	}

	public int getBattery() {
		return battery;
	}

	public void setBattery(int battery) {
		this.battery = battery;
	}
	
}
package com.computer;

interface Graphic {
	public double rendering(int size);
}
package com.computer;

public class Laptop extends Computer implements Graphic{
	
	Laptop() {
		
	}

	public Laptop(String name, int cpu, int memory, int battery) {
		super(name, cpu, memory, battery);
	}

	@Override
	public void opearate(int time) {
		int battery = getBattery();
		setBattery(battery - time / 10);
	}
	
	@Override
	public double rendering(int size) {
		return (double)size / (getCpu() * getMemory()) * 20;
	}

	@Override
	public String toString() {
		return getName() + "\t" + getCpu() + "\t" + getMemory() + "\t" + getBattery();
	}
	
}
package com.computer;

public class Tab extends Computer implements Graphic{
	
	Tab() {
		
	}

	public Tab(String name, int cpu, int memory, int battery) {
		super(name, cpu, memory, battery);
	}

	@Override
	public void opearate(int time) {
		int battery = getBattery();
		setBattery(battery - time / 5);
	}
	
	@Override
	public double rendering(int size) {
		return (double)size / (getCpu() * getMemory()) * 30;
	}
	
	@Override
	public String toString() {
		return getName() + "\t" + getCpu() + "\t" + getMemory() + "\t" + getBattery();
	}

}
package com.computer;

public class ComputerTest {
	
	public static void main(String[] args) {
		
		Computer arrays [] = new Computer[4];
		
		// ๊ฐ์ฒด ์ƒ์„ฑ
		arrays[0] = new Laptop("Lap01", 2, 1024, 2000);
		arrays[1] = new Laptop("Lap02", 3, 2048, 2300);
		arrays[2] = new Tab("Tap01", 2, 1024, 1200);
		arrays[3] = new Tab("Tap02", 3, 2048, 1300);
		
		// ๋ชจ๋“  ๊ฐ์ฒด์˜ ๊ธฐ๋ณธ ์ •๋ณด๋ฅผ ์ถœ๋ ฅํ•œ๋‹ค.
		System.out.println("name\tcpu\tmemory\tbattery");
		System.out.println("-------------------------------");
		for(int i=0; i<4; i++) {
			System.out.println(arrays[i]);
		}
		System.out.println();
		
		// ๋ชจ๋“  ์ปดํ“จํ„ฐ๋ฅผ 55์”ฉ ์‚ฌ์šฉ์„ ํ•œ ๋ฐฐํ„ฐ๋ฆฌ ๋ณ€ํ™” ๋‚ด์šฉ๊ณผ 
		// ๋ชจ๋“  ๊ฐ์ฒด์— size๊ฐ€ 100์ธ ์ด๋ฏธ์ง€๋ฅผ ๋ Œ๋”๋ง ํ•˜๋Š”๋ฐ ๊ฑธ๋ฆฌ๋Š” ์‹œ๊ฐ„์„ ์ถœ๋ ฅํ•œ๋‹ค.
		for(int i=0; i<4; i++) {
			arrays[i].opearate(55);
		}
		
		System.out.println("name\tcpu\tmemory\tbattery\t  rendering time");
		System.out.println("-------------------------------------------------");
		for(int i=0; i<4; i++) {
			System.out.print(arrays[i] + "\t  ");
			System.out.println(String.format("%.2f", ((Graphic) arrays[i]).rendering(100)));
		}
	}
}

๋ฌธ์ œ 4

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  • ๋‚ด ์ฝ”๋“œ
package com.shape;

public class Point {
	
	private int x;
	private int y;
	
	public Point() {
		
	}

	public Point(int x, int y) {
		super();
		this.x = x;
		this.y = y;
	}

	public int getX() {
		return x;
	}

	public void setX(int x) {
		this.x = x;
	}

	public int getY() {
		return y;
	}

	public void setY(int y) {
		this.y = y;
	}
}
package com.shape;

public abstract class Shape {
	
	protected Point point;
	
	public Shape() {
		
	}

	public Shape(Point point) {
		super();
		this.point = point;
	}
	
	public abstract double getArea();
	
	public abstract double getCircumference();

	public Point getPoint() {
		return point;
	}

	public void setPoint(Point point) {
		this.point = point;
	}
}
package com.shape;

interface Movable {
	public void move(int x, int y);
}
package com.shape;

public class Rectangle extends Shape implements Movable{

	private int width;
	
	Rectangle() {
		
	}

	public Rectangle(int width, int x, int y) {
		super(new Point(x,y));
		this.width = width;
	}

	@Override
	public void move(int x, int y) {
		int cur_x = getPoint().getX();
		int cur_y = getPoint().getY();
		
		setPoint(new Point(cur_x + 2 + x, cur_y + 2 + y));
	}

	@Override
	public double getArea() {
		return getWidth() * getWidth();
	}

	@Override
	public double getCircumference() {
		return 4 * getWidth();
	}

	public int getWidth() {
		return width;
	}

	public void setWidth(int width) {
		this.width = width;
	}

	@Override
	public String toString() {
		return "Rectangle\t" + getWidth() + '\t' + getPoint().getX() + '\t' + getPoint().getY();
	}
}
package com.shape;

public class Circle extends Shape implements Movable{
	
	private int radius;
	
	Circle() {
		
	}

	public Circle(int radius, int x, int y) {
		super(new Point(x,y));
		this.radius = radius;
	}

	@Override
	public void move(int x, int y) {
		int cur_x = getPoint().getX();
		int cur_y = getPoint().getY();
		
		setPoint(new Point(cur_x + 1 + x, cur_y + 1 + y));
	}

	@Override
	public double getArea() {
		return getRadius() * getRadius() * 3.14;
	}

	@Override
	public double getCircumference() {
		return 2 * 3.14 * getRadius();
	}

	public int getRadius() {
		return radius;
	}

	public void setRadius(int radius) {
		this.radius = radius;
	}
	
	@Override
	public String toString() {
		return "Circle\t\t" + getRadius() + '\t' + getPoint().getX() + '\t' + getPoint().getY();
	}
}
package com.shape;

import java.util.ArrayList;
import java.util.List;

public class ShapeTest {
	
	public static void main(String[] args) {
		
		List<Shape> shapeList = new ArrayList<Shape>();
		
		// ๊ฐ์ฒด ์ƒ์„ฑ
		shapeList.add(new Rectangle(4, 7, 5));
		shapeList.add(new Rectangle(5, 4, 6));
		shapeList.add(new Circle(6, 6, 7));
		shapeList.add(new Circle(7, 8, 3));
		
		System.out.println("๊ตฌ๋ถ„\t\t๊ธธ์ด\tX์ขŒํ‘œ\tY์ขŒํ‘œ\tArea\tCircumference");
		
		for(Shape shape : shapeList) {
			System.out.println(shape + "\t" + String.format("%.0f", shape.getArea()) + "\t" + String.format("%.0f", shape.getCircumference()));
		}
		
		for(Shape shape : shapeList) {
			((Movable)shape).move(10, 10);
		}
		System.out.println("์ด๋™ ํ›„...");
		
		for(Shape shape : shapeList) {
			System.out.println(shape);
		}	
	}
}
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