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programming languages Online Quiz - 96

Description: programming languages Online Quiz - 96
Number of Questions: 20
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Tags: programming languages
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4) What is the result of compiling and running the following code? class VarArgOne { public static void printArgs(String s, Integer ... i, String s) { //line 1 for(int j : i) { //line 2 System.out.print(j + " " + s); //line 3 } } public static void main(String ... args) { //line 4 printArgs("exam", 12, 34, "scjp"); //line 5 } }

  1. Compilation fails due to error at line 1.

  2. Compilation fails due to error at line 2.

  3. Compilation fails due to error at line 4.

  4. Compilation fails due to error at both line 1 and line 4.


Correct Option: A

3) How can you call one constructor from another if a class has multiple constructors

  1. Cant do

  2. use this ()

  3. new keyword

  4. using objectname


Correct Option: B

2) What will be the output of the following program when it is made to run with the options "java scjp5_0.chap07.Ques01 1"package scjp5_0.chap07;public class Ques01 { public static void main(String[] args) { for (int i = 0; i < 2; i ++){ try{ System.out.println(args[i]); }catch(Exception e){} } }}

  1. The program will output 'scjp5_0.chap07.Ques01 1'.

  2. The program will output 1.

  3. The program will output '1' and then will raise an ArrayIndexOutOfBoundsException.

  4. The program won't print anything but will raise an ArrayIndexOutOfBoundsException at run-time.


Correct Option: B

1) What will be the output of the following program?package chapters.chap02;public class Chap02 { public static void main(String[] args) { for (int i=0; i&lt;5; i++){ switch (i){ case 0: System.out.println(&quot;0&quot;); ++i; break; case -1: System.out.println(&quot;-1&quot;); break; case 2: System.out.println(&quot;2&quot;); i++; case 4: System.out.println(&quot;4&quot;); break; } } }}

  1. The program will not stop and it will run recursively upon execution

  2. The program will output '0 2 5 5'.

  3. The program will output '0 2 4 4'.

  4. The program will output '02 4 5'.


Correct Option: C

What is displayed when the following code is compiled and executed? String s1 = new String("Test"); String s2 = new String("Test"); if (s1==s2) System.out.println("Same"); if (s1.equals(s2)) System.out.println("Equals");

  1. Same Equals

  2. Equals

  3. Same

  4. The code compiles, but nothing is displayed upon execution.

  5. The code fails to compile.


Correct Option: B

Whenever the "&&" operator is used, such as in: exp1 && exp2 where exp1 and exp2 are boolean expressions, both the boolean expressions are not always evaluated.

  1. True

  2. False


Correct Option: A

Declarations must appear at the start of the body of a Java method.

  1. True

  2. False


Correct Option: B

The modulus operator (%) in Java can be used only with variables of integer type.

  1. True

  2. False


Correct Option: B

we Can create multiple objects of a single class.

  1. True

  2. False


Correct Option: A

What will be the output on compiling/running the following code? public class MyThread implements Runnable { String myString = "Yes "; public void run() { this.myString = "No "; } public static void main(String[] args) { MyThread t = new MyThread(); new Thread(t).start(); for (int i=0; i < 10; i++) System.out.print(t.myString); } }

  1. Compilation Error

  2. Prints : Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes and so on.

  3. Prints : No No No No No No No No No No and so on.

  4. Prints : Yes No Yes No Yes No Yes No Yes No and so on.

  5. The Output cannot be determined.


Correct Option: E

What is the result when you compile and run the following code? public class Test { public void method() { for(int i = 0; i < 3; i++) { System.out.print(i); } System.out.print(i); } }

  1. 0122

  2. 0123

  3. Compilation error

  4. None of these


Correct Option: C

What results from attempting to compile and run the following code? public class Ternary { public static void main(String args[]) { int a = 5; System.out.println("Value is - " + ((a < 5) ? 9.9 : 9)); } }

  1. prints: Value is - 9

  2. prints: Value is - 5

  3. Compilation error

  4. None of these


Correct Option: D

What will happen when you attempt to compile and run the following code? int Output = 10; boolean b1 = false; if((b1 == true) && ((Output += 10) == 20)) { System.out.println("We are equal " + Output); } else { System.out.println("Not equal! " + Output); }

  1. Compilation error, attempting to perform binary comparison on logical data type.

  2. Compilation and output of "We are equal 10".

  3. Compilation and output of "Not equal! 20".

  4. Compilation and output of "Not equal! 10".


Correct Option: D

The "switch" selection structure must end with the default case.

  1. True

  2. False


Correct Option: A

"What will be the output of the following snippet: MOVE ZERO TO WS-COUNT IF WS-COUNT = 0 NEXT SENTENCE END-IF ADD +1 TO WS-COUNT. DISPLAY 'VALUE OF WS-COUNT: ' WS-COUNT "

  1. VALUE OF WS-COUNT: 0

  2. VALUE OF WS-COUNT: 1

  3. Compile error

  4. None of the above


Correct Option: A

"What will be the output of the following snippet: MOVE ZERO TO WS-COUNT IF WS-COUNT = 0 CONTINUE END-IF ADD +1 TO WS-COUNT. DISPLAY 'VALUE OF WS-COUNT: ' WS-COUNT "

  1. VALUE OF WS-COUNT: 0

  2. VALUE OF WS-COUNT: 1

  3. Compile error

  4. None of the above


Correct Option: A

"77 WS-AMT PIC ZZZ999. ADD 100 TO WS-AMT WILL RESULT IN?"

  1. COMPILATION ERROR

  2. SOC7

  3. WS-AMT+100

  4. SOC4


Correct Option: A

"05 X PIC 99 VALUE 10. SUBTRACT 20 FROM X. DISPLAY X The result would be?"

  1. 1}

  2. It will give error

  3. 10

  4. -10


Correct Option: C

What is the maximum length of a field you can define using COMP-1?

  1. 10

  2. 18

  3. 17

  4. 12


Correct Option: A

"01 WS-VAR1 PIC X(10) VALUE 'ABCDEFGHIJ'. 01 WS-VAR2 REDEFINES WS-VAR1 PIC 9(5) VALUE '12345' DISPLAY WS-VAR1 WS-VAR2. What will be the result?"

  1. ABCDEFGHIJ 12345

  2. Data Exception error

  3. Compilation error

  4. 12345FGHIJ 12345


Correct Option: C
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