java input output problems

Problem 04:

What is the output of  the following question

int a=3,b=4,c=3;

 if(a==b)

     System.out.println("a and b are equal");

 else if(a==c)

     System.out.println("a and c are equal");

 else

     System.out.println("Nothing are equals");

Output:

A and c are equal

Problem 05:

What is the output of  the following question

int a=3,b=3,c=3;

 if(a==b)

     System.out.println("a and b are equal");

  if(a==c)

     System.out.println("a and c are equal");

 else

     System.out.println("Nothing are equals");

Output:

A and b are equal

A and c are equal

Problem 06:

What is the output of  the following question

int a=3,b=3,c=3;

 if(a==b)

     System.out.println("a and b are equal");

  if(a==c)

     System.out.println("a and c are equal");

 if(b==c)

     System.out.println("b and c are equal");

Output:

A and b are equal

A and c are equal

B and c are equal