Java In Easy Way

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What is java primitive data types

Data types are used to represent type of the variable & expressions.Representing how much memory is allocated for variable.Specifies range value of the variable. There are 8 primitive data types in java Data Type size(in bytes) Range default values byte 1  -128 to 127 0 short  2 -32768 0 int  4 -2147483648  to 2147483647  0…

What are java identifiers

Every name in java is called identifier such as, Class-name Method-name Variable-name Rules to declare identifier: An identifier contains group of Uppercase & lower case characters, numbers ,underscore & dollar sign characters but not start with number. int abc=10;      —> valid                          int _abc=30;  —> valid              int $abc=40;  —>valid int a-bc=50;    —>not valid                   int 2abc=20;  —> Invalid          …


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