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Head First Javaexercise problem

Alexandra Zhang

Joined: Jun 08, 2007
Posts: 16

I got a problem with my exericese of Head First Java.

My code is :

It compiles fine, but won't output.

The error message is:

Exception in thread "main" java.lang.NoSuchMethodError: method java.lang.String.format with signature (Ljava.lang.String;[Ljava.lang.Object;) Ljava.lang.String; was not found.
at FullMoons.main(FullMoons.java:14)

My operating system is Ubontu Linux, and java version is 5.

Please help me with it.

Edit by mw: Added Code Tags and disabled smilies.
[ July 09, 2007: Message edited by: marc weber ]
Jeanne Boyarsky
author & internet detective

Joined: May 26, 2003
Posts: 32633

Welcome to JavaRanch!

Have you tried typing "javac -version" to make sure the version of Java being used is the same as the one you expect? It's possible an older version of Java is getting in the path first.

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