[For input string: ""] java solutions encountered error problem

Java developers who do, your life, at least once or repeatedly encountered [For input String: ""] this error problem because usually appear in a string coerced to numeric types when misstatements.

such as:

String yanggb = "";
int num = Integer.parseInt(yanggb);

This code will be reported [For input String: ""] error message.

This time the solution is very simple, just do the type conversion when it null and deal with it.

String yanggb = "";
int num = Integer.parseInt(StringUtil.isNotEmpty(yanggb) ? yanggb : "0");

Pay special attention to making the string type conversion when numeric type, otherwise this problem may occur.

 

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