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Tip of the Day
Language: Java
Expertise: Beginner
Mar 27, 2001



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Conditional Compilation in Java

The C preprocessor provides for conditional compilation in instances where large areas of text are ignored and stripped out, regardless of whether a given preprocessor constant was defined. For example:
#if defined(XYZ)
    //code part 1
     //code part 2

Although this functionality is not directly available in Java, we can achieve the same as follows:

Step 1: Define an Interface:
interface ABC

    public static final boolean XYZ= true;

Step 2: Write the conditional statement as usual:
 if (ABC.XYZ)
     // Code part 1
     // Code part 2

The Java compiler is smart and completely strips the code of the appropriate conditional branch.
Sudip Bhattacharya
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