Null pointer Exception

[uhdam]

Hi..

I get a null pointer exception error. Please give me a solution as how to access this. The code snippet is as follows.

 public class x
{
	private String y;

	public String gety()
	{
		return y;
	}

	public void sety(String m)
	{
		this.y = m ;
	}

}


public class a
{

	x ax = new x();
	ax.sety("Hai");

}


public class z
{
	a az = new a();
	System.out.println(za.ax.gety()); //null Pointer exeption

}

[r035198x]

Are you sure that your code compiles?
Also read the NullPointerExce ption article.

[uhdam]

Yes sir.. it does...

[r035198x]

Classes a and z do not compile.

[JosAH]

Yes sir.. it does...

Don't lie. The code you've shown us doesn't compile; no discussion about it.

kind regards,

Jos

[devgupta01]

Please correct your code and write code according to java recomendations

Hi..

I get a null pointer exception error. Please give me a solution as how to access this. The code snippet is as follows.

public class x
{
private String y;

public String gety()
{
return y;
}

public void sety(String m)
{
this.y = m ;
}

}


public class a
{

x ax = new x();
ax.sety("Hai");

}


public class z
{
a az = new a();
System.out.prin tln(za.ax.gety( )); //null Pointer exeption

}

Correct code for class a and claas z as follows -

public class Z {
	public static void main(String a[]){
        A az = new A();
System.out.println(az.ax.getY()); //null Pointer exeption
  }
}

class A
{
    X ax;
    A(){
	ax = new X();
	ax.setY("Hai");
      }

}


class X
{
	private String y;

	public String getY()
	{
		return y;
	}

	public void setY(String m)
	{
		this.y = m ;
	}

}

Now I think urn code will compile and run...