Tell us something about jit compiler. Why string is immutable. Defference between interface and abtract. Defference between process and threads.

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JIT compiler compiles bytecode to machine code at runtime. String is immutable to ensure security and thread safety. Interface defines only method signatures while abstract class can have method implementations. Process is an instance of a program while thread is a subset of a process.

JIT compiler stands for Just-In-Time compiler and is used to improve the performance of Java programs by compiling bytecode to machine code at runtime.
String is immutable to ensure security and thread safety. Immutable objects cannot be modified once created, which prevents any accidental or intentional changes to the data.
Interface defines only method signatures while abstract class can have method implementations. Abstract classes can also have constructors and instance variables.
Process is an instance of a program while thread is a subset of a process. A process can have multiple threads, each executing a different part of the program concurrently.

Tell us something about jit compiler. Why string is immutable. Defference between interface and abtract. Defference between process and threads.

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