CODEWITHSUNDEEP
javaoptimizationprofiling
Ravi Parmar
Ravi Parmar

Reputation: 1452

Identifying which parts of my Java program need optimization

I want to optimize my Java source code, but I am not sure what parts of my code may be optimized. Is there any tool or any technique through which I can optimize my Java source code?

I know the basic fundamentals of code optimization, but I have a large number of lines and very complex source code (Java classes).

Can I optimize my code with the help of a Java profiler?

Thanks in Advance!

Upvotes: 4

Views: 5069

Answers (3)

FrVaBe
FrVaBe

Reputation: 49351

Their are several tools for static code analyzes (to do code style / code convention / best practises / bug "optimization" of your code).

I would recommend using Sonar. It covers them all and is easy to setup - even on a local machine (unzip and start). It is best used with maven projects but also possible for NON maven projects.

Upvotes: 0

Peter Lawrey
Peter Lawrey

Reputation: 533750

What do you mean by optimising your code? DO you want to refactor your code to simplify it. In that case I suggest you use your IDE to help refactor the code.

If you want to minimise its memory / CPU consumption, I would suggest you use a profiler like VisualVM or YourKit to idenify where resources are being consumed.

A code analysis tool can also help pick up the obvious performance issues. I have code analysis on as I type in my IDE which helps me pick up those issues as I write it.

Upvotes: 3

Andreas Dolk
Andreas Dolk

Reputation: 114817

Performance optimization - yes, a profiler may help. At least it can show you those areas in your application that take an unexpected amount of CPU time.

But before starting to apply changes - take care not to do some microoptimization. Look at improving algorithms first. Sometimes we use nested for loops while a task can be done with a single one (linear time). Double check if you use the correct collection types. Then have a look if you accidentally create more objetcs than needed (object creation in loops is a typical reason for performance problems).

Upvotes: 3

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