java8支持lambda 可以写成 Collections.sort(names, (String s1, String s2)->s1.compareTo(s2))
Java 8 使用 Lambda表达式
Collections.sort(names, (s1, s2) -> s1.compareTo(s2));
Collections.sort(names, new Comparator() {
@Override
public int compare(String s1, String s2) {
return s1.compareTo(s2);
}
});