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Java String Numeric Check Methods

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Plain Java Approach: Java provides built-in methods for parsing numbers: Integer, Float, Double, Long, BigInteger
NumberFormatException handling indicates successful parsing
Regular Expressions Method: Uses regex pattern -?\d+(\.\d+)? to match numeric strings
Handles both positive and negative integers and floats
Apache Commons Library Methods: NumberUtils.isCreatable() checks for hexadecimal, octal, scientific notation
NumberUtils.isParsable() verifies successful number parsing
StringUtils.isNumeric() checks for Unicode digits only
StringUtils.isNumericSpace() checks for Unicode digits and spaces
Performance Analysis: Regular expressions perform best in simple benchmark
Core Java solutions perform second best
Commons library methods perform similarly
NumberFormatException handling affects performance significantly