CODEWITHSUNDEEP
javakeyword
user3741086
user3741086

Reputation: 125

Quick Access to java keywords

Is it possible with the Java System Library to get all Java keywords like for,while, etc. in a HashTable etc.

Or do i need to write them all down by myself?

I want to scan a String for the keywords.

Upvotes: 2

Views: 140

Answers (2)

Nikolas
Nikolas

Reputation: 44496

Here is the array of all the Java reserved keywords (taken from here and keep being updated from here):

String keywords[] = { "abstract", "assert", "boolean", "break", "byte", "case", "catch", 
    "char", "class", "const", "continue", "default", "do", "double", "else", "extends", 
    "false", "final", "finally", "float", "for", "goto", "if", "implements", "import", 
    "instanceof", "int", "interface", "long", "native", "new", "null", "package", 
    "private", "protected", "public", "return", "short", "static", "strictfp", "super", 
    "switch", "synchronized", "this", "throw", "throws", "transient", "true", "try", 
    "void", "volatile", "while"
};

You have to navigate to the library where is Hashtable class using the JAVA_HOME system variable. 

System.getenv("JAVA_HOME");

The java.util.Hashtable (and others) is located at %JAVA_HOME%/jre/lib/rt.jar library.

You have to find a way to extract the package, find the required file, decompile it and read lane by lane (using f.e. Regex). I recommend you to start reading answers of this question.

Unfortunately, there is NO other way.

Upvotes: 3

Andrew_CSE
Andrew_CSE

Reputation: 359

A list of Java keywords can be found in the Java documentation: https://docs.oracle.com/javase/tutorial/java/nutsandbolts/_keywords.html

With a list like this, you can create a String array that you can search.

Upvotes: 0

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