Methods in Java

A(n) ____ causes a value to be sent from a called method back to the calling method

• method statement

• return statement

• initialization

• assignment

Which of the following could be the last legally coded line of a method declared as

public static int getVal(double sum)?

• return;

• return 77;

• return 2.3;

• Any of these could be the last coded line of the method

Consider the following two methods:

public int profit(int x, int y) {

return x + y;

}

public int appeals(int x, int y) {

return x * y;

}

What would the value of z be if the following equation were implemented?

int z = appeals(6, profit(9, 7));

• 63

• 44

• 96

• 75

Which of the following methods can be terminated by an empty return statement?

I. public static void func1()

II. public static int func1()

III. public static String func1()

• I only

• II only

• III only

• I and II

• II and III

What is the final output of the code segment below?

public class Sample {

public static void main(String[] args) {

int x = 5;

x = mystery(x + 1);

11

System.out.println(x);

}

public static int mystery(int x) {

int s = 0;

for (int I =1;i<x-1;i++){

s=s+x;

}

return s;

}}

• 12

• 10

• 24

• 28

What does this program print?

public static int mystery(int x)

{

int y = x * x;

return y;

}

public static void main(String[] args) {

int a = 4;

System.out.println(mystery(a + 1));

}

• 20

• 12

• 22

• 25

Which of the following is true about a void method?

I. The method returns a boolean value

II. The method does not return any value

III. The method has a void return type

• I only

• II only

• III only

• I and II only

• II and III only

What is the output of the following code fragment?

Class A

{

Public static void main(String[]args)

{

System.out.println(sub());

}

Public static String sub()

{

String status="Sending…";

Return status;

}

}

• 0

• Sending...

• status

• state

• compilation error

Which of the following is the correct output of the

code segment below?

class A

{

private static int M=40;

public static void main(String[]args)

{

System.out.println(isValid());

}

public static boolean isValid()

{

if (M<100)

{

return true;

}

else

{

return false;

}

}

}

• 0

• 1

• true

• false

• 55

The method public static boolean testValue(int response) returns ___________.

• a boolean value

• an int value

• no value

• You cannot determine what is returned.