/*Create a sub directory named p1 under current working directory and create a java program
containing class TwoDim and save as TwoDim.java
package p1;*/
public class TwoDim
{
private int x;
private int y;
public TwoDim()
{
this.x = 0;
this.y = 0;
}
public TwoDim(int x, int y)
{
this.x = x;
this.y = y;
}
@Override
public String toString()
{
return "Coordinate: x = " + x + " y = " + y;
}
}
/*Create a sub directory named p2 under current working directory and create a java program
containing class ThreeDim and save as ThreeDim.java
package p2;*/
import p1.*;
public class ThreeDim extends TwoDim
{
private int z;
public ThreeDim()
{
super(0, 0);
this.z = 0;
}
public ThreeDim(int x, int y, int z)
{
super(x, y);
this.z = z;
}
@Override
public String toString()
{
return super.toString() + " z = " + z;
}
}
//In the current working directory create a file named as PkgDemo.java
import p1.*;
import p2.*;
public class PkgDemo
{
public static void main(String[] args)
{
TwoDim td = new TwoDim(1, 2);
System.out.println(td);
ThreeDim thd = new ThreeDim(3, 4, 5);
System.out.println(thd);
}
}
/*To Execute follow the below steps:
(i)Compile the file of package p1 and p2 using the below command in current working directory
to create class files of TwoDim.java and ThreeDim.java
javac -classpath . p1/TwoDim.java
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javac -classpath . p2/ThreeDim.java
(ii) Compile the source file PkgDemo.java and run the same:
javac PkgDemo.java
java PkgDemo
Coordinate: x = 1 y = 2
Coordinate: x = 3 y = 4 z = 5*/