Proxy > Gmail Facebook Yahoo!

Java question answer




(1)
public class Loop {
    public static void main(String[] args){
         int i=0;
         boolean b=true;
         for(i++;b;i++)
         {
             System.out.println(~i);
             b^=true;
         }
    }
}
What will be output of above program?
(a)-2
(b)-3
(c)Infinite loop
(d)Compiler error
Answer: (a)
(2)
public class ClassDemo {
    public static void main(String[] args){
         ClassDemo o=new ClassDemo();
         o.cal(5,10,15);
    }
     void cal(byte p,byte q,byte r)
    {
         System.out.print(p+q+r);
    }
}
What will be output of above program?
(a)30
(b)30b
(c)30B
(d)Compiler error
Answer: (d)
(3)
public class Literal {
    public static void main(String[] args) {
         int a ='\u0041';
         int b='\15';
         int c=a+b;
         System.out.println(c);
    }
}
What will output when you compile and run the above code?
(a)56
(b)4115
(c)78
(d) Compiler error
Explanation: (c)
(4)
class BitwiseOperator
{
    public static void main(String[] args)
    {
         byte a=-10,b=0;
         b=a>>2;
         System.out.println(b);
    }
}
What will output when you compile and run the above code?
(a)-40
(b)-2
(c)2
(d)Compiler error
Answer: (d)
(5)
package raja;
public class World {
    boolean b=false^false;
    Boolean c=!true;
}

package manish;
import raja.World;
class AccessControl {
    public static void main(String[] args){
         World w=new World();
         System.out.print(w.b+","+w.c);
    }
}
What will be output of above program?
(a)false,false
(b)true,false
(c)true,true
(d)Compiler error
Answer: (d)

(6)
public class Loop {
    public static void main(String[] args){
         int i=0;
         int j=5;
         boolean b=true;
         for(i++,--j;b;)
         {
             System.out.println(~i-~j);
             b^=true;
         }
    }
}
What will be output of above program?
(a)3
(b)4
(c)Infinite loop
(d)Compiler error
Answer: (a)
(7)
public class ClassDemo {
    public static void main(String[] args){
         ClassDemo o=new ClassDemo();
         o.cal(5,10,15);
    }
     void cal(short p,short q,short r)
    {
         System.out.print(~p+~q+~r);
    }
}
What will be output of above program?
(a)-33
(b)-30
(c)-33h
(d)Compiler error
Answer: (d)
(8)
public class Literal {
    public static void main(String[] args) {
         int a=010+0x20+'\10'+'\u0020';
         System.out.println(a);
    }
}
(a)60
(b)2040
(c)80
(d) Compiler error

Answer:  (c)
Explanation:
(9)
class BitwiseOperator
{
    public static void main(String[] args)
    {
         byte a=-10;
         int b=a>>2;
         int c=a>>>2;
         System.out.println("a= "+a+" b="+b+" c="+c);
    }
}
What will output when you compile and run the above code?
(a) a=-10 b=-3  c=1073741821
(b) a=-3 b=-3  c=-3
(c) a=-10 b=-3  c=-3
(d)Compiler error
Answer: (a)
(10)
package raja;
public class World {
    public boolean b=false^false;
    public Boolean c=!true;
}

package manish;
import raja.World;
class AccessControl {
    public static void main(String[] args) {
         World w=new World();
         System.out.print(w.b+","+w.c);
    }
}
What will be output of above program?
(a)true,true
(b)false,false
(c)true,false
(d)Compiler error
Answer: (b)

(11)
public class Loop {
    public static void main(String[] args){
         int i=0;
         int j=05;
         for(i++,--j;j>0;)
         {
             System.out.println(j>>>i);
             --j;
         }
    }
}
What will be output of above program?
(a)2
   1
   1
   0
(b)2
   0
(c)2
   0
   0
(d)Compiler error
Answer:(a)
(12)
public class ClassDemo {
    public static void main(String[] args){
         ClassDemo o=new ClassDemo();
         o.cal(5,10,15);
    }
     void cal(short p,short q,short r)
    {
         System.out.print(~p+~q+~r);
    }
}
What will be output of above program?
(a)-33
(b)-30
(c)-33h
(d)Compiler error
Answer: (d)
(13)What will be output of following program?
class StringLiteral
{
   
    public static void main(String[] args)
    {  
         String str="india\11usa";
         System.out.println(str);
    }
}
What will output when you compile and run the above code?
(a)India\11usa
(b)India usa
(c)india
(d)Compiler error
Answer: (b)
(14)
public class UnaryOperator {
    public static void main(String[] args) {
         int j=5;
         j=++j + j++ + ++j;
         System.out.print(j);
    }
}
What will output when you compile and run the above code?
(a)18
(b)19
(c)20
(d)21
Answer: (c)
(15)
package raja;
class World {
    public boolean b=false^false;
    public Boolean c=!true;
}
Package manish;
import raja.World;
class AccessControl {
    public static void main(String[] args) throws Exception {
         World w=new World();
         System.out.print(w.b+","+w.c);
    }
}
What will be output of above program?
(a)false,false
(b)true,false
(c)true,true
(d)Compiler error
Answer: (d)


Responses

0 Respones to "Java question answer"


Send mail to your Friends.  

Expert Feed

 
Return to top of page Copyright © 2011 | My Code Logic Designed by Suneel Kumar