Tag: general knowledge

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Questions Related to general knowledge

Multiple choice general knowledge science & technology

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; }

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice general knowledge science & technology

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; } }

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice general knowledge science & technology

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); } }

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation