INDU, BALA

Well Done Guoqiao

Indu

All the very best Vidya,

Indu

Congrats Ashik

Indu

Congrats Padmaja
Indu

Well Done Rajani

Indu

Hi Vijayan,

Let us go thru your code
void pBinInt(String s, int i) { System.out.println(s + ", int: " + i + ", binary: "); System.out.print(" "); for(int j = 31; j >=0; j--) if(((1 << j) & i) != 0) /*line no.5*/ System.out.print("1");/line no 6/ else System.out.print("0");/line no 8/ }

Your code works like this
Iter 1 : 1<< 31 = 10000000 00000000 00000000 00000000
i = 5 = 00000000 00000000 00000000 00000101
(1<<31) & 5= 00000000 00000000 00000000 00000000 This exp results line no 8 ie 0

Iter 2 : 1<< 30 = 010000000 00000000 00000000 0000000
i = 5 = 00000000 00000000 00000000 00000101
(1<<30) & 5= 00000000 00000000 00000000 00000000 This exp results line no 8 ie 0
Like this the for loop executes until j becomes 0. Thus the prg is printing the binary value for any given int.
Hope this helps
Indu

[This message has been edited by INDU, BALA (edited August 24, 2001).]

Hi,

We can declare object references for the interface. These
object references can hold any instatnce of the class which
implements that interface. for eg.

interface disp { void method1(int param); } class myclass1 implements disp{ public void method1(int p){ System.out.println("This is from myclass1 " +p); } } class myclass2 implements disp{ public void method1(int p){ System.out.println("This is from myclass2 " +p); } } public class InterfaceDemo{ public static void main(String args[]){ disp d = new myclass1(); d.method1(10); disp d1 = new myclass2(); d1.method1(20); } }
Output:
This is from myclass1 10
This is from myclass2 20

The correct version of the method is called thru the obj ref.

Indu

[This message has been edited by INDU, BALA (edited August 23, 2001).]
[This message has been edited by INDU, BALA (edited August 23, 2001).]

Hi Ragu,
For Code no 2 answer is d. You are right.

Indu

Hi Cameron,
Just I have changed Nilsson's code little bit and executed,
go thru this code and its output
code 1:

public class LabeledLoop{ public static void main( String args[] ){ int myArray[] = new int[ 3 ]; mainloop: for(int i = 0; i < myArray.length; i++){ for(int j = 0; j < myArray.length; j++){ if( j == 2 ){ System.out.println( "breaking mainloop" ); break mainloop; } System.out.println( "j: " + j + " i: " + i ); } } } }

The output is
j: 0 i: 0
j: 1 i: 0
breaking mainloop

If you replace break mainloop with continue mainloop the output will be like this
j: 0 i: 0
j: 1 i: 0
continuing mainloop
j: 0 i: 1
j: 1 i: 1
continuing mainloop
j: 0 i: 2
j: 1 i: 2
continuing mainloop

Hope this helps
Indu

Hi Sooyun,

For code no 2:

I am getting the error " Sample class cannot be instantiated".
Indu

Hi Asish,
For code 1 :
The out put will be 2.
For code 2 :
The valid methods in the sub class are
void method() { }
void method(int i) { }
Indu

Hi leena,
Hope this discussion helps
http://www.javaranch.com/ubb/Forum24/HTML/001830.html

Indu

Hi,
Just go thru this
http://www.javaranch.com/ubb/Forum24/HTML/000775.html
hope this helps

Hi Siobhan,
Can you tell me why no.4 is not correct
I feel it is right. If there is no reference pointing to that object then it is ready for GC.

Indu

No problem. Returntype, accessibility,exception list may vary freely in overloading methods.

Hope this helps