如何在Java中执行字符串比较？

Question

我需要在Java字符串之间执行Diffs。我希望能够使用原始的string和diff版本重建字符串。有人用Java完成吗？您使用什么图书馆？String a1; // This can be a long textString a2; // ej. above text with spelling correctionsString a3; // ej. above text with spelling corrections and an additional sentenceDiff diff = new Diff();String differences_a1_a2 = Diff.getDifferences(a,changed_a);String differences_a2_a3 = Diff.getDifferences(a,changed_a);    String[] diffs = new String[]{a,differences_a1_a2,differences_a2_a3};String new_a3 = Diff.build(diffs);a3.equals(new_a3); // this is true

Answer 1

Apache Commons具有String diff

org.apache.commons.lang.StringUtils

StringUtils.difference("foobar", "foo");

Answer 2

正如Torsten所说，您可以使用

org.apache.commons.lang.StringUtils;

System.err.println(StringUtils.getLevenshteinDistance("foobar", "bar"));