11. What is JVM?
12. Which of these classes encapsulate runtime environment?
13. What will be the output of the following Java program?
class newthread implements Runnable
{
Thread t;
newthread()
{
t = new Thread(this,"My Thread");
t.start();
}
public void run()
{
System.out.println(t);
}
}
class multithreaded_programing
{
public static void main(String args[])
{
new newthread();
}
}
class newthread implements Runnable
{
Thread t;
newthread()
{
t = new Thread(this,"My Thread");
t.start();
}
public void run()
{
System.out.println(t);
}
}
class multithreaded_programing
{
public static void main(String args[])
{
new newthread();
}
}14. What will be the output of the following Java program?
class newthread implements Runnable
{
Thread t;
newthread()
{
t = new Thread(this,"My Thread");
t.start();
}
}
class multithreaded_programing
{
public static void main(String args[])
{
new newthread();
}
}
class newthread implements Runnable
{
Thread t;
newthread()
{
t = new Thread(this,"My Thread");
t.start();
}
}
class multithreaded_programing
{
public static void main(String args[])
{
new newthread();
}
}15. What will be the output of the following Java program?
class X
{
int a;
double b;
}
class Y extends X
{
int c;
}
class Output
{
public static void main(String args[])
{
X a = new X();
Y b = new Y();
Class obj;
obj = b.getClass();
System.out.print(b.equals(a));
}
}
class X
{
int a;
double b;
}
class Y extends X
{
int c;
}
class Output
{
public static void main(String args[])
{
X a = new X();
Y b = new Y();
Class obj;
obj = b.getClass();
System.out.print(b.equals(a));
}
}16. Which of these is a super class of wrappers Double & Integer?
17. Which one of the following is a class loader?
18. What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
Integer i = new Integer(257);
byte x = i.byteValue();
System.out.print(x);
}
}
class Output
{
public static void main(String args[])
{
Integer i = new Integer(257);
byte x = i.byteValue();
System.out.print(x);
}
}19. Which of these interfaces is implemented by TimerTask class?
20. Which of the following is an incorrect statement regarding the use of generics and parameterized types in Java?
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