Java Strings MCQs with answers Page - 1

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A

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Q. Which class is used to handle strings in Java?

  • (A) StringBuffer
  • (B) String
  • (C) StringBuilder
  • (D) Character

A

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Q. Which of the following creates a string in Java?

  • (A) String s = 'hello';
  • (B) String s = "hello";
  • (C) String s = new char[5];
  • (D) String s = new String('hello');

A

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Q. What is the output?
String s = "hello";
System.out.println(s.length());

  • (A) 4
  • (B) 5
  • (C) 6
  • (D) 0

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Q. Which method is used to compare two strings for equality in Java?

  • (A) ==
  • (B) compare()
  • (C) equals()
  • (D) isEqual()

A

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Q. What will this print?
String s = "Java";
System.out.println(s.charAt(2));

  • (A) J
  • (B) a
  • (C) v
  • (D) A

A

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Q. Which method returns a substring in Java?

  • (A) substring()
  • (B) slice()
  • (C) cut()
  • (D) split()

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Q. Strings in Java are:

  • (A) mutable
  • (B) final
  • (C) immutable
  • (D) primitive

A

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Q. What will be the result?
"hello" == "hello"

  • (A) true
  • (B) false
  • (C) Compile-time error
  • (D) Runtime error

A

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Q. Which method converts all characters to uppercase?

  • (A) toUpper()
  • (B) uppercase()
  • (C) convertUpper()
  • (D) toUpperCase()

A

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Q. How do you concatenate two strings?

  • (A) str1.concat(str2)
  • (B) str1 + str2
  • (C) str1.append(str2)
  • (D) Both A and B

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