JAVA Optimization Tips

The costs of Strings: Avoid using '+' operator for concatenating no. of Strings.... The String concatenation operator + looks good and easy but this involves: new StringBuffer is created, the two arguments are added to it with append(), and the final result is converted back with a toString(). This costs both space and time. In particular, if you're appending more than one String, consider using a StringBuffer directly instead.

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