White Space

White Space

Blank lines improve readability by setting off sections of code that are logically related.

Two blank lines should always be used between sections of a source file. That is, two blank lines should follow:

·         The opening comment

·         The package statement

·         The import statements

·         The class and interface declaration

One blank line should always be used in the following circumstances:

·         Between methods

·         Between the local variables in a method and its first statement

·         Before a block or single-line comment.

·         Between logical sections inside a method to improve readability.

·         Use common sense and don't be afraid to put blank lines!

Blank Spaces

• Blank spaces should be used in the following circumstances:
• A blank space should appear after commas in argument lists.
• All binary operators except. Should be separated from their operands by spaces. Blank spaces should never separate unary operators such as unary minus, increment ("++"), and decrement ("--") from their operands.
• The expressions in a "for" statement should be separated by blank spaces.

Example:

	public void aMethod(int a, int b, int c, int d) {     a += c + d;     a = (a + b) / (c * d);       printSize("size is " + foo);       for(expr1; expr2; expr3)     {         /* No Body */     } }

 

 

 

 

 

 

Parentheses

It is generally a good idea to use parentheses liberally in expressions involving mixed operators to avoid operator precedence problems

	if(a == b && c == d)        // AVOID! if((a == b) && (c == d))    // RIGHT

 

 

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