JAVA CODE SNIPPET-10

/**
 * 
 */
package techyield;

/**
 * @author satyanarayana gokavarapu
 *
 */
public class Node {

 public Node(int i) {
  System.out.println("In Node class parameterized constructor "+i);
 }

}

package techyield;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test{

 public static void main(String[] args) {
  // TODO Auto-generated method stub

  List list = new ArrayList();
  list.add(new Node(10));
  list.add(new String("Krishna"));
  System.out.println(list.get(1)); 

  Set set = new HashSet();
  set.add(new Node(1));
  set.add(new Node(2));
  set.add(new Node(2));
  System.out.println("Length of set is "+set.size());
 }


}

Select an answer

Compile Time Error

Runtime Exception can't insert duplicates into set.

In Node class parameterized constructor 10
Krishna
In Node class parameterized constructor 1
In Node class parameterized constructor 2
In Node class parameterized constructor 2
Length of set is 3

In Node class parameterized constructor 10
Krishna
In Node class parameterized constructor 1
In Node class parameterized constructor 2
In Node class parameterized constructor 2
Length of set is 2

Please comment below if you have any doubts.

JAVA CODE SNIPPET-9

package techyield;
/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test{

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Test object = new Test();
  int value=4;
  object.init(value,value);
 }
 void init( Long a,Long b)
 {
  System.out.println("Test class Long,Long method.");
 }
 void init(int... a)
 {
  System.out.println("Test class varargs method.");
 }
}

Select an answer

Compilation Error.

Test class Long,Long method.

No Output.

Test class varargs method.

Please comment below if you have any doubts.

JAVA CODE SNIPPET-8

package techyield;
/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test{

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Test object = new Test();
  int value=4;
  object.init(value,value);
 }
 void init( Long a,Long b)
 {
  System.out.println("Test class Long,Long method.");
 }
 void init(int... a)
 {
  System.out.println("Test class varargs method.");
 }
 void init( long a,long b)
 {
  System.out.println("Test class long,long method.");
 }
}

Select an answer

Compilation Error.

Test class Long,Long method.

Test class long,long method.

Test class varargs method.

Please comment below if you have any doubts.

JAVA CODE SNIPPET-6

/**
 * 
 */
package techyield;

/**
 * @author satyanarayana gokavarapu
 *
 */
public class Super {
 void init( long a,long b)
 {
  System.out.println("Super class long,long method.");
 }
 void init( Long a,Long b)
 {
  System.out.println("Super class Long,Long method.");
 }
}

package techyield;
/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test extends Super{

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Super object = new Test();
  object.init(2,3);
 }
 void init( int a,int b)
 {
  System.out.println("Test class int,int method.");
 }
 void init(int... a)
 {
  System.out.println("Test class varargs method.");
 }
}

Select an answer

Test class varargs method.

No output.

Super class Long,Long method.

Super class long,long method.
Compile Time Error.
Test class int,int method.

Please comment below if you have any doubts.

JAVA CODE SNIPPET-5

/**
 * 
 */
package techyield;

/**
 * @author satyanarayana gokavarapu
 *
 */
public class Super {
 void init( int a,int b)
 {
  System.out.println("Super class int,int method.");
 }
 void init( long a,long b)
 {
  System.out.println("Super class long,long method.");
 }
 void init( Long a,Long b)
 {
  System.out.println("Super class Long,Long method.");
 }
}

package techyield;
/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test extends Super{

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Test object = new Test();
  object.init(2,3);
 }
 void init(int... a)
 {
  System.out.println("Test class varargs method.");
 }
}

Select an answer

Test class varargs method.

Super class int,int method.

Super class Long,Long method.

Super class long,long method.

Please comment below if you have any doubts.

JAVA CODE SNIPPET-4

/**
 * 
 */
package techyield;

/**
 * @author satyanarayana gokavarapu
 *
 */
public class Super {
 void init(final long a,long b)
 {
  System.out.println("Super class long method.");
 }

}

package techyield;
/**
 * @author satyanarayana gokavarapu
 *
 */
public class Test extends Super{

 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Test object = new Test();
  object.init(2,3);
 }
 void init(int... a)
 {
  System.out.println("Test class varargs method.");
 }
}

Select an answer

Compile Time error

Super class long method.

Test class varargs method.

Run Time exception.

Please comment below if you have any doubts.

JAVA CODE SNIPPET-3

public class Techyield {


 private static int p = test();

 static int test()
 {
  return 99;
 }


 public static void main(String[] args) {
  // TODO Auto-generated method stub
  System.out.println("value of p"+p);
  System.out.println(++p);
  System.out.println(5+p--+2);
  System.out.println(++p*10);
 }

}

Select an answer

Static variable should be called with class name.

value of p is 99
100
106
1070

value of p is 99
100
107
1070

value of p is 99
100
107
1000

value of p is 99
100
107
1080

Please comment below if you have any doubts.