What are the guidelines when writing a java program?

Answer 1

Some simple and basic guidelines for writing java programs are:

• Always initialize variables before using them
• Do not declare unused variables especially collections
• Always check for null before performing operations on objects
• Do not catch unwanted exceptions
• Use a logging mechanism instead of using printStackTrace()
• Use loops only when required and add proper loop termination conditions
• Do not duplicate code. Try to re-use code as much as possible
• Always add comments to the methods
• Do not code huge classes. Keep classes limited to 700 lines of code
• etc.