Quiz - Programming With Java - Language Fundamentals

| Sign In

Time left:

[All Quizzes] → [Programming With Java] → [Language Fundamentals]

1. ► Select the true statement about given code ?

class Solution {
    public static void main(String[]args) {
        for (int i = 0; i < args.length; i++)
            System.out.print(i == 0 ? args[i] : " " + args[i]);
        System.out.println();
}}

A. To compile type command " javac Solution.java"
B. To run this programme type command "java Solution"
C. If you type following command "java Solution test java" out put will be "test java"
D. This compilation unite will be saved in file as Solution.java
E. All

2. ► Selects correct declaration of array variable?

A. short [][] arr
B. Object [] objArr
C. byte[] rowvector, colvector, matrix[];
D. byte rowvector[], colvector[], matrix[][];
E. All

3. ► What would be output of following program

public class SolArray {
    public static void main(String[]args) {
        int array1[] = { 1, 2 };

        int array2[] = array1;

        System.out.print((array1 == array2) + " ");
        array1[1]++;
        System.out.println(array2[1]);
    }
}

A. false 2
B. false 10
C. false 1
D. true 3
E. true 2

4. ► Which statement(s) are true about following program?

class MyException extends Exception {
    MyException() {
    } MyException(String s) {
        super(s);
    }
}

public class FunDo {
    static void throwException() throws MyException {
        throw new MyException();
    } public static void main(String[]args) {
        try {
            throwException();
        } catch(RuntimeException r) {
            System.out.println("RuntimeException:" + r);
        } catch(MyException exp) {
            System.out.println("MyException");
        }
    }
}

A. Class MyException have a empty constructor.
B. Main class in given program is Fundo.
C. Class Fundo is subclass in given program.
D. Class MyException is super class of class Fundo.
E. Option 1 & 2

5. ► Which of following can be represented as literal in java?

A. Integer
B. Float
C. String
D. Null
E. All

6. ► Which statement(s) is true about java?

A. Java is object oriented programming language.
B. Java is platform independent.
C. Java is architecture neutral.
D. Java is interpreted.
E. All

7. ► What would be output of following program?

public class SolArray {
    public static void main(String[]args) {
        int array1[] = { 1, 2 };

        int array2[] = array1;

        System.out.println(array1[0] == array2[0]
                           && array1[1] == array2[1]);
    }
}

A. FALSE
B. Some runtime exception.
C. TRUE
D. Program fails to compile.
E. None

8. ► Which statements are true about following code?

Class A {
    int x;
} class B extends A {
    int y;
}

A. Class B extends Class A.
B. Class A is super class of Class B
C. Objects of class B will have a field named x;
D. Class B is subclass of Class A.
E. All

9. ► What would be output of following program?

public class FunOp {
    public static void main(String[]args) {
        int x = 3, y = 5;
        int a = x + y - x / y + 2;
        int b = (x + y) - x / (y + 2);
         System.out.println("a=" + a + " " + "b=" + b);
}}

A. a=8 b=8
B. a=8 b=9
C. a=9 b=8
D. a=10 b=9
E. a=10 b=8

10. ► Select declaration where array objects are created?

A. int [] array;
B. int Arrayfactorial = {1,1,2,6,24};
C. char c;
D. byte[] rowvector, colvector, matrix[];
E. Exception ae[] = new Exception[3];

11. ► What would be output of following program?

public class FunOp {
    public static void main(String[]args) {
        int x = 3, y = 5;
        int a = x + y - x / y + 2;
        int b = (x + y) - x / (y + 2);
         System.out.println(a + b);
}}

A. 10 8
B. 18
C. 9
D. 108
E. none

12. ► Which statement is/are true about object?

A. An object is an instance of a class.
B. Objects can be manipulated.
C. An object can be created using key word 'new' followed by constructor of class.
D. An object have life cycle.
E. All

13. ► What is the command to check version of installed java?

A. java -version
B. java --version
C. java -v
D. java --v
E. none

14. ► What would be output of following program?

class Solution {
    public static void main(String[]args) {
        int[] array = new int[101];
        for (int i = 0; i < array.length; i++)
             array[i] = i;
        int sum = 0;
        for (int x:array)
             sum += x;
         System.out.println(sum);
}}

A. It fails to compile.
B. 50
C. 500
D. 5010
E. 5050

15. ► You are writing a java class HelloWorld which prints "HelloWorld", what will be the file name of your program?

A. HelloWorld.java
B. HelloWorld.class
C. HelloWorld
D. HelloWorld.javaclass
E. none

16. ► Which of following is not of integer types?

A. long
B. FALSE
C. double
D. float
E. byte

17. ► What would be output of following program?

public class SolArray {
    public static void main(String[]args) {
        int array[][] = { {1, 2}, null };

      for (int[]arr:array)
          for (int x:arr)
                System.out.println(x);
    }
}

A. Program fails to compile.
B. Program prints 12.
C. Program fails with Exception.
D. Option 2 & 3
E. All

18. ► Which statement is true? Select one correct answer.

A. try, catch and thrown are keywords in java language.
B. new and old are keywords in java language.
C. return,this,void are keywords in java language.
D. while,next,for are keywords in java.
E. exit,if,finally are keywords in java language.

19. ► What would be output of following program?

public class FunDo {
    public static void main(String[]args) {
        int x = 9;
         x += (x = 3);
         System.out.print(x);
        int y = 9;
         y = y + (y = 3);
         System.out.print(" ");
         System.out.println(y);
}}

A. 9 9
B. 3 9
C. 12 9
D. 12 12
E. 9 12

20. ► Choose correct option about Arrays in java?

A. Arrays are objects.
B. Arrays are dynamically created.
C. An array containing n elements, all elements should be of same type.
D. An array element can be an array type.
E. All