Java toString method difference

Question

I enjoy CodeFights at the moment and at the end of my last fight i found something interesting. The code in those two cases (mine and the opponent) was said to be correct. Is there a difference between this source code:

return Integer.toString(Character.getNumericValue(ch1) + Character.getNumericValue(ch2));

and this one:

return new Integer(Character.getNumericValue(ch1)+ Character.getNumericValue(ch2)).toString();

What is the key that i am missing?

this is java and many ways drive you to Rom too... both return the same one is static called.... — ΦXocę 웃 Пepeúpa ツ, Apr 21 '16 at 19:30

score 1 · Accepted Answer · answered Apr 21 '16 at 19:32

1

From javadoc https://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html

String toString() Returns a String object representing this Integer's value.

static String toString(int i) Returns a String object representing the specified integer.

answered Apr 21 '16 at 19:32

Xiongbing Jin

11,779
3
47
41

score 1 · Answer 2 · answered Apr 21 '16 at 19:32

1

Integer's toString method is implemented as Integer.toString(value), so the second answer merely has a redundant instantiation.

@Override
public String toString() {
    return Integer.toString(value);
}

answered Apr 21 '16 at 19:32

Allen G

1,160
6
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Java toString method difference

2 Answers2