Computer Programming (COPROG) Practice Test

Which of the following is true about String in Java?

It is a primitive type It is created by default It is immutable like a primitive It is a class in java.lang and a non-primitive type

Correct Answer:

It is a class in java.lang and a non-primitive type

Explanation:

Strings in Java are reference types, not primitive values. They are implemented as objects of the String class, which lives in the java.lang package. Because it’s a class, String is a non-primitive type. Strings are immutable: once a String object is created, its character sequence cannot be changed, and operations like concatenation create new String objects. That combination—being a class in java.lang and a non-primitive type—is why this statement is correct. Other options miss or misframe the reality: primitive types are not objects and don’t have methods; string literals aren’t about being created by default in any special sense; and while Strings are immutable, that property comes from the class design, not from being primitive.

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