example for Composition

company_Case.java

package SatyamCorp.company;

/**
 * Created by SatyamCorp on 21-Feb-17.
 */
public class Case {

    private String Model;
    private String Manufacturer;
    private String PowerSupply;
    private Dimension dimensions;

    public Case(String model, String manufacturer, String powerSupply, Dimension dimensions) {
        Model = model;
        Manufacturer = manufacturer;
        PowerSupply = powerSupply;
        this.dimensions = dimensions;
    }

    public void pressPowerButton(){
        System.out.println("power Button pressed.");
    }

    public String getModel() {
        return Model;
    }

    public String getManufacturer() {
        return Manufacturer;
    }

    public String getPowerSupply() {
        return PowerSupply;
    }

    public Dimension getDimensions() {
        return dimensions;
    }
}

company_Dimension.java

package SatyamCorp.company;

/**
 * Created by SatyamCorp on 21-Feb-17.
 */
public class Dimension {

    private int width;
    private int height;
    private int depth;

    public Dimension(int width, int height, int depth) {
        this.width = width;
        this.height = height;
        this.depth = depth;
    }

    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }

    public int getDepth() {
        return depth;
    }
}

company_Main.java

package SatyamCorp.company;

public class Main {

    public static void main(String[] args) {
	// write your code here
        Dimension dimension = new Dimension(20,40,50);
        Case theCase = new Case("hp450","HP","240Watt",dimension);
        Monitor theMonitor = new Monitor("LedPlasma_27","LG",27,new Resolution(1920,1080));
        MotherBoard motherBoard = new MotherBoard("Quick_50","Intel",4,2,"v3.0");
        PC thePC = new PC(theCase,theMonitor,motherBoard);
        thePC.getTheMonitor().drawPixelAt(1500,2000,"red");
        thePC.getMotherBoard().LoadProgram("Windows 1.0");
        thePC.getTheCase().pressPowerButton();
    }
}

company_Monitor.java

package SatyamCorp.company;

/**
 * Created by SatyamCorp on 21-Feb-17.
 */
public class Monitor {

    private String Model;
    private String ManufacturerName;
    private int Size;
    private Resolution NativeResolution;

    public Monitor(String model, String manufacturerName, int size, Resolution nativeResolution) {
        Model = model;
        ManufacturerName = manufacturerName;
        Size = size;
        NativeResolution = nativeResolution;
    }
    public void drawPixelAt(int x, int y , String color){
        System.out.println("the pixel is drawn at " + x + " and at "+ y + " and the color is " + color );
    }

    public String getModel() {
        return Model;
    }

    public String getManufacturerName() {
        return ManufacturerName;
    }

    public int getSize() {
        return Size;
    }

    public Resolution getNativeResolution() {
        return NativeResolution;
    }
}

company_MotherBoard.java

package SatyamCorp.company;
/**
 * Created by SatyamCorp on 19-Feb-17.
 */
public class MotherBoard {

    private String model;
    private String ManufacturerName;
    private int RamSlots;
    private int CardSlots;
    private String Bios;

    public MotherBoard(String model, String manufacturerName, int ramSlots, int cardSlots, String bios) {
        this.model = model;
        ManufacturerName = manufacturerName;
        RamSlots = ramSlots;
        CardSlots = cardSlots;
        Bios = bios;
    }
    public void LoadProgram(String ProgramName){
        System.out.println("Program " +ProgramName+ " is loading..!");
    }

    public String getModel() {
        return model;
    }

    public String getManufacturerName() {
        return ManufacturerName;
    }

    public int getRamSlots() {
        return RamSlots;
    }

    public int getCardSlots() {
        return CardSlots;
    }

    public String getBios() {
        return Bios;
    }
}

company_PC.java

package SatyamCorp.company;

/**
 * Created by SatyamCorp on 21-Feb-17.
 */
public class PC {

    private Case theCase;
    private Monitor theMonitor;
    private MotherBoard motherBoard;

    public PC(Case theCase, Monitor theMonitor, MotherBoard motherBoard) {
        this.theCase = theCase;
        this.theMonitor = theMonitor;
        this.motherBoard = motherBoard;
    }

    public Case getTheCase() {
        return theCase;
    }

    public Monitor getTheMonitor() {
        return theMonitor;
    }

    public MotherBoard getMotherBoard() {
        return motherBoard;
    }
}

company_Resolution.java

package SatyamCorp.company;

/**
 * Created by SatyamCorp on 21-Feb-17.
 */
public class Resolution {

    private int width;
    private int height;

    public Resolution(int width, int height) {
        this.width = width;
        this.height = height;
    }

    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }
}