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Important Keywords in Java

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Keywords refer to the reserved set of words of a language. These are used for some predefined actions.

  1. abstract: It is a non-access modifier applicable for classes and methods. It is used to achieve abstraction. For more, refer to abstract keyword in java
  2. enum: It is used to define enum in Java
  3. instanceof: It is used to know whether the object is an instance of the specified type (class or subclass or interface).
  4. private: It is an access modifier. Anything declared private cannot be seen outside of its class.
  5. protected: If you want to allow an element to be seen outside your current package, but only to classes that subclass your class directly, then declare that element protected.
  6. public: Anything declared public can be accessed from anywhere. For more on Access Modifiers, refer to Access Modifiers in Java 
  7. static: It is used to create a member(block, method, variable, nested classes) that can be used by itself, without reference to a specific instance. For more, refer static keyword in java
  8. strictfp: It is used for restricting floating-point calculations and ensuring the same result on every platform while performing operations in the floating-point variable. For more refer strictfp keyword in Java
  9. synchronized: Applicable for blocks methods. It is used to get synchronization in java. For more, refer to Synchronized in Java
  10. transient: transient is a variables modifier used in serialization. At the time of serialization, if we don’t want to save the value of a particular variable in a file, then we use the transient keyword. For more refer transient keyword in Java
  11. volatile: The volatile modifier tells the compiler that the variable modified by volatile can be changed unexpectedly by other parts of your program. For more, refer to volatile keyword in java

Last Updated : 15 May, 2022
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