This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.
Name | null |
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Examples | String content = "It is a beautiful day."; String[] results; // Declare empty String array results = match(content, "orange"); // The match statement above will fail to find // the word "orange" in the String 'content', so // it will return a null value to 'results'. if (results == null) { println("Value of 'results' is null."); // This line is printed } else { println("Value of 'results' is not null!"); // This line is not printed } |
Description | Special value used to signify the target is not a valid data element. In Processing, you may run across the keyword null when trying to access data which is not there. |