Tag: science & technology

Questions Related to science & technology

Analyze the following code:boolean even = false;if (even = true) { System.out.println("It is even!");}
general knowledge science & technology

  1. The program has a syntax error

  2. The program has a runtime error

  3. The program runs fine, but displays nothing

  4. The program runs fine and displays It is even!

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Correct Option: D

Analyze the following program fragment: int x; double d = 1.5; switch (d) { case 1.0: x = 1; case 1.5: x = 2; case 2.0: x = 3; }
general knowledge science & technology

  1. The program has a syntax error because the required break statement is missing in the switch statement

  2. The program has a syntax error because the required default case is missing in the switch statement

  3. The switch control variable cannot be double

  4. No errors

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Correct Option: C

What is sum after the following loop terminates? int sum = 0; int item = 0; do { item++; sum += item; if (sum > 4) break; } while (item < 5);
general knowledge science & technology

  1. 5

  2. 6

  3. 7

  4. 8

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Correct Option: B

What will be the value of str after line no.7?1 class string 2 {3 public static void main String ds[])4 {5 String str="A";6 str.concat("B");7 str+="C";8 }9 }

general knowledge science & technology

  1. A

  2. AB

  3. AC

  4. ABC

  5. compile-time error

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Correct Option: C

Analyze the following code: public class Test { public static void main(String[] args) { System.out.println(max(1, 2)); } public static double max(int num1, double num2) { System.out.println("max(int, double) is invoked"); if (num1 > num2) return num1; else return num2; } public static double max(double num1, int num2) { System.out.println("max(double, int) is invoked"); if (num1 > num2) return num1; else return num2; } }
general knowledge science & technology

  1. The program cannot compile because the compiler cannot determine which max method should be invoked

  2. The program cannot compile because you cannot have the print statement in a non-void method

  3. The program runs and prints "max(int, double) is invoked" followed by 2

  4. The program runs and prints "max(double, int) is invoked" followed by 2

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Correct Option: A

I can have multiple main methods in same class.
general knowledge science & technology

  1. True

  2. False

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Correct Option: B

Analyze the following code: public class Test { public static void main(String[] args) { System.out.println(m(2)); } public static int m(int num) { return num; } public static void m(int num) { System.out.println(num); } }
general knowledge science & technology

  1. The program runs and prints 2 once

  2. The program runs and prints 2 twice

  3. The program has a syntax error because the second m method is defined, but not invoked in the main method

  4. The program has a syntax error because the two methods m have the same signature

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Correct Option: D

It takes approximately 12 hours for food to entirely digest.
general knowledge science & technology

  1. True

  2. False

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Correct Option: A

The longest living cells in the body are brain cells which can live an entire lifetime.
general knowledge science & technology

  1. True

  2. False

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Correct Option: A

The pectin that is found in apples aids in lowering cholesterol levels.
general knowledge science & technology

  1. True

  2. False

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Correct Option: A