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What is this type of initialization know as:
long i=12l; //using 'l' to denote long variable
double d=12.0d; //using 'd' to denote double variable
Is there a difference between:
long i=12l;
and
long i=12L;
These are just declaring and initializing a variable in the same statement, and using literals to supply the initial values.
There’s no difference between the two statements in the second snippet – except for readability. It’s much easier to read “L” because it looks nothing like a “1”. (One of the Java Puzzlers is based on this – and apparently the whole book’s font was chosen to make that puzzle even harder.)