java - Advantages of Integer.parseInt() over Integer constructor -

we can directly following conversion:

string s="123"; int a=new integer(s);

then advantages using integer.parseint() method?

integer constructor internally calls parseint, returns int. if call parseint directly avoid autoboxing (constructor returns integer).

public integer(string s) throws numberformatexception {     this.value = parseint(s, 10); }

also using parseint can parse string using different radix 10. instance:

int hex = integer.parseint("ff", 16); // 255 int bin = integer.parseint("10", 2); // 2

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