#Java performance comparison.
Today I decided to check the performance of different ways of converting an int variable to a String object in Java. 🧵👇
Today I decided to check the performance of different ways of converting an int variable to a String object in Java. 🧵👇
I searched on Stackoverflow:
📍Integer.toString(i)
📍"" +i
📍String.valueOf(i)
📍new StringBuilder().append(i).toString() - a bit strange way, but it was one of the suggestions😄
I have implemented 4 benchmarks using the JMH framework (see pictures).
Results 👇
📍Integer.toString(i)
📍"" +i
📍String.valueOf(i)
📍new StringBuilder().append(i).toString() - a bit strange way, but it was one of the suggestions😄
I have implemented 4 benchmarks using the JMH framework (see pictures).
Results 👇
✅Integer.toString(i) - 43.424 29.721 ns/op
✅"" +i - 27.870 ns/op
✅String.valueOf(i) - 28.371 ns/op
❌new StringBuilder().append(i).toString() - ns/op
Just don't use StringBuilder approach. Other approaches are for your taste. but I personally prefer: String.valurOf(i).
✅"" +i - 27.870 ns/op
✅String.valueOf(i) - 28.371 ns/op
❌new StringBuilder().append(i).toString() - ns/op
Just don't use StringBuilder approach. Other approaches are for your taste. but I personally prefer: String.valurOf(i).
That's a wrap!
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