Reverse a string in Java

Question

I have `"Hello World"` kept in a String variable named `hi`. I need to print it, but reversed. How can I do this? I understand there is some kind of a function already built-in into Java that does that. Related: Reverse each individual word of “Hello World” string with Java

Accepted Answer

You can use this:

```
new StringBuilder(hi).reverse().toString()
```

`StringBuilder` was added in Java 5. For versions prior to Java 5, the `StringBuffer` class can be used instead — it has the same API.

Reverse a string in Java

Solution

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