Which of the following is a valid primitive type in Java?[Fill in the blank]

Question

BlackTom AI · Accepted Answer

The question asks which option corresponds to a valid primitive type in Java.
Option a: 'array' is not a primitive type in Java. In Java, arrays are objects; they are reference types created from a class template, not primitive values.
Option b: 'character' is not the correct primitive name. The actual primitive type is 'char'. While 'char' represents a single Unicode character, the word 'character' by itself does not denote a primitive type in Java, so this option is incorrect.
Option c: 'Double' refers to the wrapper class java.lang.Double, which is an object type used for boxing/unboxing. It is not a primitive; the primitive type is 'double'. Therefore this is incorrect.
Option d: 'boolean' is a primitive type in Java, representing true/false values without object overhead. This is the correct primitive type among the options.
Option e: 'String' is a class in Java (java.lang.String), not a primitive type. Strings are objects that represent sequences of characters, so this option is incorrect.
In summary, among the given choices, the only true primitive type is boolean, while the others are either wrapper classes, classes, or misnamed primitives.

Which of the following is a valid primitive type in Java?[Fill in the blank]单项选择题

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