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Java Java Data Structures Exploring the Java Collection Framework Maps

Thomas Williams
Thomas Williams
9,301 Points
Posted by Thomas Williams
Thomas Williams
9,301 Points

KeySet Error in the java-repl

This code when typed into the java-repl:

'''java> Set<String> allAcronyms = acronyms.KeySet();'''

is producing this error:

'''ERROR: cannot find symbol
symbol: method KeySet()
location: variable acronyms of type java.util.Map<java.lang.String,java.lang.String>
acronyms.KeySet();; '''

Even though it is the same as that typed in the tutorial video. Any explanations??

1 Answer

James Simshaw
James Simshaw
28,738 Points

Hello,

It looks like you're trying to call the keySet() method, so double check your capitalization and it should start working.

Thomas Williams
Thomas Williams
9,301 Points
Thomas Williams
Thomas Williams
9,301 Points

Thank you, I thought it looked like a capital, my mistake! That has fixed the problem.

James Simshaw
James Simshaw
28,738 Points

You're welcome. Good luck with Java.