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Confusion about string objects

 
Ranch Hand
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Can anyone explain the meaning that string objects is immutable?
 
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Basically it means that once you created a String, you can't change it (one of its characters for example).
Any operation like swapping a character, upper casing it and others is going to create a new String.
 
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Note that you can't change the String object, but changing the String reference is possible (if the variable isn't final):
 
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Hi Roger, you can see the source code of String API methods to research more on this topic....

It will give you more knowledge and confidence on this popular question...
 
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