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The ClassLoader is a built-in mechanism in the Java Virtual Machine (JVM) that is responsible for loading class files into the JVM at runtime. It is an essential component of the Java language that enables the JVM to dynamically load and execute Java classes.
The ClassLoader is responsible for finding and loading the bytecode of a class into memory. It's also responsible for resolving the class dependencies, linking the class and initializing the class at runtime. When a class is first used, its bytecode is loaded into memory by the ClassLoader, and the JVM can then execute the class's methods.