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string - Java substring not working

Forgive me, I'm new to Java and have an extremely basic question. I have a string and want a substring of it, for example:

String str = "hello";
str.substring(1);
System.out.println(str);

Instead of getting "ello" I get the original "hello", any idea why this is? Thanks.

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Strings in Java are immutable. I believe you want to do this:

String str = "hello";
str = str.substring(1);
System.out.println(str);

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