Quiz - Programming With Java - Language Fundamentals

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

1. ► What command should be used to execute main method of class Solution?

A. Javac Solution
B. java Solution.main
C. java Solution
D. java Solution.class
E. java Solution.java

2. ► Java is strongly typed language, true or false?

A. TRUE
B. FALSE

3. ► 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.

4. ► What will be the output of following program?

public class Fun {
    public static void main(String[]args) {
        int i = 0;
         System.out.print(i++ + " " + ++i);
         i = ++i;
         System.out.print(i);



}}

A. 0
B. 2
C. 3
D. 23
E. 0 23

5. ► 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

6. ► 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

7. ► Which reserve keyword in java is not currently in use?

A. continue
B. return
C. volatile
D. goto
E. finally

8. ► 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

9. ► What will be hex value of integer value 2013?

A. 8D
B. 7C
C. 7D
D. 7DD
E. None

10. ► 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

11. ► Which of following is not a legal identifier in java?

A. String
B. i3
C. 0Element
D. MAX_VALUE
E. _object

12. ► Select option(s) which represent output of following program.

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

        int array2[] = array1;

        System.out.println(array1.getClass());
        System.out.println(array1.getClass().getSuperclass());

    }
}

A. class [I class java.lang.Object
B. class array
C. class array[]
D. class java.lang.Object
E. All

13. ► 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

14. ► What command is the used to compile java class Solution.java?

A. java
B. javaa Solution.java
C. javac Solution.main
D. javac Solution.java
E. javac Solution

15. ► 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];

16. ► 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

17. ► 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

18. ► Which statement is true about integer?

A. A integer can be represented in decimal (base 10 ) format.
B. A integer can be represented in hexadecimal (base 16) format.
C. A integer can be represented in octal (base 8) format.
D. A integer can have negative value.
E. All

19. ► Which of following statement is true about comments in java programming language?

/* text *///test

A. All the text from ASCII characters /* to ASCII */ is ignored.
B. All the text from ASCII characters // to end-of-line are ignored.
C. You cannot nest comments in java programming language.
D. If comment begin with // ASCII characters /* and */ have no special meaning.
E. All

20. ► 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