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'When you concatenate a String and an integer, the result is a String. Internally, the code is inefficient because there are intermediate objects that are created behind the scene'.
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Java Int to String
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The code is insufficient as explained in the link http://javadevnotes.com/java-integer-to-string-examples
'When you concatenate a String and an integer, the result is a String. Internally, the code is inefficient because there are intermediate objects that are created behind the scene'.