true, false, and null are reserved words but not key words. There is a difference in terminology.
keywords and identifiers are special reserved words in Java that cannot be used as identifiers for classes, methods, and variables.
Keywords, Indentifiers, Reserved words
本文探讨了Java中true、false及null等保留字的使用特点，并解释了这些词汇虽然被保留但并非关键字的原因。同时，文章还介绍了标识符与关键字的区别及其在类、方法和变量命名中的应用。
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