Which of the followings are true about constructors?

1. A class can have more than one constructor.
2. They can be inherited.
3. Their address can be referred.
4. Constructors cannot be declared in protected section of the class.
5. Constructors cannot return values.

Which allows the storage of a null key and null values?

Which of the following has a method names flush( )?

Which are the examples of Application Server?

A situation where two or more threads are blocked forever and waiting for each other to release resources.

The following example shows which XML Syntax rule,
< note date=” 12/11/2007″>
< to>Tove< /to>
< from>Jani< /from>
< /note>

How many instances Singleton class can have in Java?

import java.util.*;

public class Main
{
public static void main(String[] args) {
List<Integer> mylist = new ArrayList();
mylist.remove(0);
System.out.println(mylist.size());
}
}

public class Main
{
public static void main(String[] args) {

try{
int a = -100;
System.out.print(a);
throw null;
}
catch(Exception obj){
System.out.print(obj.getMessage());
}
}
}

public class Main
{
public static void main(String[] args) {
String str = new String();
System.out.println(str);
}
}

What is true about ‘private’ members of a class?

class Feline {
public String type = “f “;
public Feline() {
System.out.print(“feline “);
}
}
public class Cougar extends Feline {
public Cougar() {
System.out.print(“cougar “);
}
void go() {
type = “c “;
System.out.print(this.type + super.type);
}
public static void main(String[] args) {
new Cougar().go();
}
}

………………….. is the key to ………………

The client in socket programming must know which informations?

Which interface should be implemented for sorting on basis of many criteria’s?