Can be applied to methods or explicit blocks. It requires a thread to acquire a unique object-level or class-level lock before executing the protected code block.

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The PDF notes are packed with executable code examples, compiler error explanations, and runtime behavior analysis. Core Java Syllabus Blueprint: What the Tutorial Covers

Java is a strongly typed language. It supports 8 primitive data types: byte , short , int , long , float , double , char , and boolean .