Quiz - Programming With Java - Language Fundamentals

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

1. ► 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

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

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

3. ► 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

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

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

5. ► 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

6. ► 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

7. ► 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

8. ► Selects correct declaration of array variable?

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

9. ► 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

10. ► 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

11. ► 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

12. ► 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

13. ► 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

14. ► 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

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

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

16. ► 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

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

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

18. ► 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];

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

A. TRUE
B. FALSE

20. ► 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