Q1public class Test1{
public static void main(String[] args)
{int arr[] = new int[3];
for(int i = 0;i < arr.length;i++){
System.out.println(arr[i]);
}
} }
What will be the output?
A1 0 0 0
A2 ArrayIndexoutOfBoundsException
A3 NullPointerException
A4 null null null
Q2 Which of the following are valid array declarations?
A1 int arr[] = new int[];
A2 float arr[10] = new fl
A3 double []arr = new double[10];
A4 None Of the Above.
Q3 public class Test3{
public void method(){
System.out.println("Called");
}
public static void main(String[] args){
method();
}
}
What will be the output?
A1 "Called"
A2 Compiler
A3 Runtime
A4 Nothing
Q4 public class Test4{
public static void method(){
System.out.println("Called");
}
public static void main(String[] args)
{ Test4 t4 = null;
t4.method();
} }
What will be the output?
A1 "Called"
A2 Compiler
A3 Runtime Exception
A4 Nothing is printed in screen
Q5 public class Test5{
public void Test5()
{
System.out.println("Constructor1");
}
public Test5(){}
System.out.println("Constructor2");
public static void main(String[] args)
{
Test5 t5 = new Test5(); } }
What will be the output?
A1 "Constructor1"
A2 "Constructor2"
A3 "Constructor1""Constructor2"
A4 Compiler Errror
Q6 public class Test6{
public Test6()
{
this(4);
}
public Test6(byte var)
{
}
System.out.println(var);
public static void main(String[] args)
{
Test6 t6 = new Test6();
} }
What will be the output?
A1 4
A2 4 4
A3 Compiler Error
A4 Compiles and Runs without error
Q7 public class Test7{
public Test7(){}
public Test7(Test7 ref){
this (ref,"Hai");
}
public Test7(Test7 ref,String str)
{
ref.Test7(str);
System.out.println("Hi");
}
public void Test7(String str)
{ System.out.println(str); }
public static void main(String[] args){
Test7 t = new Test7();
Test7 t7 = new Test7(t);
}
}
What will be the output?
A1 HI
A2 hai
A3 Hai Hi
A4 Hi Hai
Q8 Which of the following are valid Constructors?
A1 public Test8(){}
A2 private void Test8(){}
A3 protected Test8(int k){}
A4 Test8(){}
Q9 Which of the following are valid method declarations?
