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javastringreversestringbuffer

Code to reverse words in a String using StringBuffer

This is some code for reversing characters in a string using StringBuffer:

String sh = "ABCDE";
System.out.println(sh + " -> " + new StringBuffer(sh).reverse());

Is there any similar way to reverse words in a string using StringBuffer?

Input: "I Need It" and Output should be: "It Need I"

Solution

  • You may use StringUtils reverseDelimited:

    Reverses a String that is delimited by a specific character. The Strings between the delimiters are not reversed. Thus java.lang.String becomes String.lang.java (if the delimiter is '.').

    So in your case we will use space as a delimiter:

    import org.apache.commons.lang.StringUtils;
String reversed = StringUtils.reverseDelimited(sh, ' ');

    You may also find a more lengthy solution without it here.