who to know the platform

[Ankur khetan]

In C/c++ through conditional compilation the code come to know that which code we have to compile on which platform i.e. win or mac...

How we come to know this in java?

[Lionel Badiou]

Hello Ankhur,

Here's a very basic tip in java:

static final boolean PC = false;
if (PC)
{
/* code here */
} 

Most java compilers (maybe all) will discard the code in backets at compile-time. So the code won't be present in bytecode.

Hope that helps,

[Ernest Friedman-Hill]

Hi,

Welcome to JavaRanch!

In general, you don't compile Java code for one particular platform; that's the whole point. You might be compiling on a Mac, but that same code might be used on Windows or Linux. Java has binary portability.

Now, sometimes, occasionally, you need to do something different at runtime on the different platforms. In this case, you can detect the platform in your code at runtime based on the value returned from System.getProperty("os.name"), and decide what to do.