Java variables and data types |
Naming VariablesYou, the developer can choose to name your variables anything you want. The name of a variable in java is called an identifier and such a name must start with a letter, underscore or a dollar sign ($). The rest of other characters are illegal and will generate compile errors. Additional restrictions include not using java keywords as variable names or a literal or anything that could be interpreted as a constant value. Variable declaration and data typesDefining a variable in java involves specifying the variable and data type. For example, we define integer variables as follows: int numberOfTries; char firstName = “Mukoya”; This statement defines a variable of type character and then assigns the name to that variable. In layman terms, this means storing the characters “Mukoya” in the memory space named firstName. |
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