How does Java reverse a string?

1. Convert a string into a character array, and then use the character array for the end-to-end exchange.

2. Using recursion, the main is: reverse (str.substring (1)) + str.charat (0);

3. Although the string class does not have a method to reverse the string, StringBuffer has this method, which can be used with StringBuffer: Sb.reverse ();

4. Other methods of StringBuffer, such as: Sb.setcharat (Swapindex,sb.charat (i));

Another example: Append method.

5. The positive-order ABCD is equivalent to a one-time stack, the reverse DCBA is equivalent to a stack, then the Java stack structure can be processed by push and pop operations.

Implementation code reference: http://dyygusi.iteye.com/blog/2161966

How does Java reverse a string?