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What is the function/method definition for int lastIndexOf(int ch)

 
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I need a little help to find the error in one of the code. For that I need a little help here. What is exactly the method definition for the function int lastIndexOf(int ch). I think lastIndexOf is a built in method in java. Thank you for the help
 
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"lastIndexOf( char )" is a method of the String class, so you need a string instance to operate on.
 
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