Objective-wise Tests – Enums – 2025

Q1. A novice java programmer is unable to get a file named Coffee.java compiled. It contains the following enum definition:

public enum Coffee //1
{
ESPRESSO("Very Strong"), MOCHA, LATTE; //2
public String strength; //3
Coffee(String strength) //4
{
this.strength = strength; //5
}
public String toString(){ return strength + ordinal(); } //6
}

Which line is causing the problem?

Select 1 option(s):

Q2. What will the following code print?

enum AccountType{
CHECKING("Checking account"), SAVINGS("Savings account"),
FD("Fixed Deposit");

private String desc;
AccountType(String desc){
this.desc = desc;
}

@Override
public String toString(){
return "Acct type:"+super.toString();
}

}

public class TestClass {
public static void main(String[] args) {
var at = AccountType.valueOf("FD");
System.out.println(at.ordinal()+" "+at);
}
}

Select 1 option(s):

Q3. This following code appears in a file named VehicleType.java. Why would it not compile?

//In file VehicleType
package objective1;
public enum VehicleType
{

SUV, SEDAN, VAN, SPORTSCAR;

public VehicleType()
{

}

}

Select 1 option(s):

Q4. Given:

enum Card
{
HEART, CLUB, SPADE, DIAMOND;
}

Which of the following code fragments will print
HEART CLUB SPADE DIAMOND
in that order?

Select 1 option(s):

Q5. Assuming the following enum declaration and a variable s of type Switch, identify potentially valid code fragments.

public enum Switch{ ON, OFF }

Select 3 option(s):

Q6. Identify the valid enum declarations.

Select 2 option(s):

Q7. Given:

enum Title
{
MR("Mr."), MS1("Ms."), MS2("Ms.");
private String title;
private Title(String s){
title = s;
}
}

public class TestClass{
public static void main(String[] args) {
var ts = new TreeSet