Core Java: Java Modifiers and White Space

Like other languages, it is possible to modify classes, methods, etc., by using modifiers. There are two categories of modifiers:

·        Access Modifiers: default, public, protected, private

·        Non-access Modifiers: final, abstract, strictfp

White Spaces:

 Blank, tab and newline are collectively called white spaces.

Ø    Java, like most of the computing languages, ignores extra white spaces. That is, multiple contiguous white spaces are treated as a single white space.

You need to use a white space to separate two keywords or tokens to avoid ambiguity, e.g.,

int sum=0;   // Cannot write intsum=0. Need at least one white space between "int" and "sum"

double average;  // Again, need at least a white space between "double" and "average"

Additional white spaces and extra lines are, however, ignored, e.g.,

// same as above

int  sum  =  0      ;

double  average  ;