Interfaces and Abstract Classes -Java Programming MCQ Questions and Answers

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();
}
}
class multithreaded_programing 
{
    public static void main(String args[]) 
    {
        new newthread();        
    }
}

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 Output 
{
    public static void main(String args[]) 
    {
        Integer i = new Integer(257);  
        byte x = i.byteValue();
        System.out.print(x);
    }
}