Student Placement Tests

Math Test 3 (Grade 8 Above)

Math Test 2 (Grade 6 and Above)

Math Test 1 (Grade 5 and Below)

Java Test

Student Placement Tests Java Test

Before you take the test:

In this assessment test, you will have 10 minutes to answer 10 multiple-choice questions.
You can take the same test for only 3 times.
Make sure you have uninterrupted 10 minutes to complete this test. If you quit in the middle, that counts once.
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Current
Review
Answered
Correct
Incorrect

Question 1 of 10

1. Question

Predict the output of following Java Programs:

class Test {

    protected int x, y;

}

class Main {

    public static void main(String args[]) {

        Test t = new Test();

        System.out.println(t.x + " " + t.y);

    }

}

Cannot run it because the class member x and the class member y are protected

0 0

null null

2 random numbers
Question 2 of 10

2. Question

Is there any compiler error in following Java Program?

// filename Test.java

class Test {

    public static void main(String[] args) {

        for(int i = 0; 1; i++) {

            System.out.println("Hello");

            break;

        }

    }

}

No errors

Yes. The class name cannot be same as the file name.

Yes. The for loop syntax is not correct.

Yes. Need to import the System module

Yes. The args is never used.
Question 3 of 10

3. Question

Which of following java programs have no errors?

// filename Main.java
class Main {
public static void main(String args[]) {
System.out.println(fun());
}
int fun() {
return 20;
}
}

// filename Main.java
class Main {
public static void main(String args[]) {
System.out.println(this.fun());
}
int fun() {
return 20;
}
}

// filename Main.java
class Main {
public static void main(String args[]) {
System.out.println(fun());
}
static int fun() {
return 20;
}
}

// filename Main.java
class Main {
public static void main(String args[]) {
System.out.println(fun());
}
void fun() {
return 20;
}
}

// filename Main.java
class Main {
public static void main(String args[]) {
Main main = new Main();
System.out.println(main.fun());
}
int fun() {
return 20;
}
}
Question 4 of 10

4. Question

What is the value of k after the following program finishes?

// filename Main.java
class Main {
public static void main(String args[]) {
int k =0;
for (byte i = ‘0’; i < 300 ; i++, k++) {
System.out.println(k);
}
}
}

300

This program never finishes.

301

299

255
Question 5 of 10

5. Question

What is the outcome of this program?

import java.util.*;
public class ListExample1{
public static void main(String args[]){
//Creating a List
List<String> list=new ArrayList<String>();
//Adding elements in the List
list.add(“Mango”);
list.add(“Apple”);
list.add(“Grapes”);
//Iterating the List element using for-each loop
for(String fruit:list){
list.add(“Cake’”);
System.out.println(fruit);
}
}
}

Print Mango then crashes

Print Mango, Cake, then crashes

Print Mango, Apple, Grapes, Cake

Crashes

Print Mango, Apple, Grapes
Question 6 of 10

6. Question

What is the output of this program?

public class Test

{

    public static void main(String[] args)

    {

        StringBuilder s1 = new StringBuilder("Java");

        String s2 = "Love";

        s1.append(s2);

        s1.substring(4);

        int foundAt = s1.indexOf(s2);

        System.out.println(foundAt);

    }

}

4

-1

3

5

Program crashes
Question 7 of 10

7. Question

What is the print of this program?

class Alpha

{

    public String type = "a ";

    public Alpha() { System.out.print("alpha "); }

}

public class Beta extends Alpha

{

    public Beta() { System.out.print("beta "); }

    void go()

    {

        type = "b ";

        System.out.print(this.type + super.type);

    }

    public static void main(String[] args)

    {

        new Beta().go();

    }

}

alpha beta b b

alpha beta a b

beta alpha b b

beta alpha a b

beta alpha a a
Question 8 of 10

8. Question

What is the outcome of this program?

public class MyStuff

{

    String name;

    MyStuff(String n) { name = n; }

    public static void main(String[] args)

    {

        MyStuff m1 = new MyStuff("guitar");

        MyStuff m2 = new MyStuff("tv");

        System.out.println(m2.equals(m1));

    }

    @Override

    public boolean equals(Object obj)

    {

        MyStuff m = (MyStuff) obj;

        if (m.name != null) { return true; }

        return false;

    }

}

Print True and m2.name is tv.

Print False and m2.name is tv.

Print False and m2.name is guitar.

Print True and m2.name is tv.
Question 9 of 10

9. Question

What is the output of this program?

public class Calculator

{

    int num = 100;

    public void calc(int num) { this.num = num * 10; }

    public void printNum()     { System.out.println(num); }

    public static void main(String[] args)

    {

        Calculator obj = new Calculator();

        obj.calc(2);

        obj.printNum();

    }

}

20

200

Program crashes

1000

100
Question 10 of 10

10. Question

What is the output of the following program?

// Main.java

public class Main

{

    public static void main(String args[])

    {

        String s1 = "abc";

        String s2 = s1;

        s1 += "d";

        System.out.println(s1 + " " + s2 + " " + (s1 == s2));

        StringBuffer sb1 = new StringBuffer("abc");

        StringBuffer sb2 = sb1;

        sb1.append("d");

        System.out.println(sb1 + " " + sb2 + " " + (sb1 == sb2));

    }

} //end class

abcd abc false abcd abcd true

abcd abcd true abcd abcd true

abcd abc false abcd abc false

abcd abcd false abcd abcd true

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