🔰 Final Class : Final Class in Java uses the final keyword for its declaration. The final keyword in java is used to restrict the user, similarly, the final class means that the class cannot be extended.
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Final Method : final method in java is the method that cannot be changed or overridden once defined. Hence, we cannot modify a final method from the subclass.
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🔰 PHP arithmetic operators : The PHP arithmetic operators are used with numeric values to perform common arithmetical operations, such as addition, subtraction, multiplication etc.
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🔰 Java final Variable : In Java, we can use final keyword with variables, methods, and classes. When the final keyword is used with a variable of primitive data types such as int, float, etc, the value of the variable cannot be changed.
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🔰 Can we inherit final method : Yes, final method is inherited but you cannot override it.
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🔰 Java Nested Classes : In Java, it is possible to define a class within another class, such classes are known as nested classes.
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🔰 Member inner class : A non-static class that is created inside a class but outside a method is called member inner class. It is also known as a regular inner class.
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🔰 Local Inner class : A method-local inner class can be instantiated only within the method where the inner class is defined.
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🔰 Static nested class : A static class is a class that is created inside a class, is called a static nested class in Java. It cannot access non-static data members and methods.
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🔰 Java Nested Interface : We can declare interfaces as members of a class or another interface. Such an interface is called a member interface or nested interface.
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🔰 What is API document in Java?
JavaDoc tool is a document generator tool in Java programming language for generating standard documentation in HTML format.
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🔰 What is multithreading in Java?
Multithreading is a Java feature that allows concurrent execution of two or more parts of a program for maximum utilization of CPU.
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🔰 What is thread life cycle in Java?
Java Life cycle of a thread or thread life cycle in java explains the five states new, runnable, running, blocked and dead.
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🔰 What is a Thread in Java?
A thread is a light-weight process in Java. It's a path of execution within a process.
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What is thread sleep method in Java?
The Java Thread. sleep() method can be used to pause the execution of the current thread for a specified time in milliseconds. The argument value for milliseconds cannot be negative. Otherwise, it throws IllegalArgumentException.…

🔰 Java Shutdown Hook : Shutdown Hooks are a special construct that allows developers to plug in a piece of code to be executed when the JVM is shutting down.
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🔰 What is ThreadGroups in Java?
A ThreadGroup represents a set of threads. A thread group can also include the other thread group. The thread group creates a tree in which every thread group except the initial thread group has a parent.
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