📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      A Java method tries to get the length of an array and a

      string. public class LengthChecker {     public void checkLengths() {         String[] names = {"Alice", "Bob"};         String greeting = "Hello";         System.out.println("Array length: " + names.length()); // Potential bug here         System.out.println("String length: " + greeting.length); // Potential bug here     } } What will happen when checkLengths() is executed?
      A Both lines will print the correct lengths (2 and 5). Correct Answer Incorrect Answer
      B A NullPointerException will occur. Correct Answer Incorrect Answer
      C A compile-time error will occur. Correct Answer Incorrect Answer
      D The array length will be incorrect, but the string length will be correct. Correct Answer Incorrect Answer
      E The string length will be incorrect, but the array length will be correct. Correct Answer Incorrect Answer

      Solution

      Correct Answer: C (In Java, arrays use .length (a field), while String objects use .length() (a method). The code swaps these, leading to compile-time errors.)

      Practice Next
      More IT Operating System Questions
      ask-question