使用String.join进行拼接 Java 8引入了String.join方法,可以更方便地对多个字符串进行拼接。 importjava.util.List;importjava.util.ArrayList;publicclassStringConcatenation{publicstaticStringconcatenateStrings(List<String>strings){returnString.join("",strings);}publicstaticvoidmain(String[]args){List<String>strings...
Java String的join()方法 String关于join()有两个重载的方法 public static String join(CharSequence delimiter, CharSequence... elements) 作用:将elements用指定的字符串delimeter连接
StringjoinedString=String.join(",","How","To","Do","In","Java");//How,To,Do,In,Java 1.2. Joining Array or List of Strings We can use this method to join the string items in the array to produce a joined string. String[]strArray={"How","To","Do","In","Java"};Stringjoine...
而由list/tuple转换为str,则需要借助join()函数来实现。join()函数是这样描述的: """ S.join(iterable) -> str Return a string which is the concatenation of the strings in the iterable. The separator between elements is S. """ join()函数使用时,传入一个可迭代对象,返回一个可迭代的字符串,该...
text.add("is"); text.add("fun"); String result; result = String.join("-", text); System.out.println(result);// Java-is-fun} } Run Code Here, anArrayListofStringtype is created. The elements of array list are joined using the-delimiter....
The third example concatenates elements of a list. Main.java import java.util.List; void main() { var words = List.of("Today", "is", "a", "beautiful", "day"); var joined = String.join(" ", words); System.out.println(joined); ...
message = String.join(" ", strings);// message returned is: "Java is cool"Set<String> strings = new LinkedHashSet<>(List.of("Java", "is", "very", "cool"));String message = String.join("-", strings);// message returned is: "Java-is-very-cool"参考资料：[1] jdk15.0.2 ...
Stringmessage=String.join("-","Java","is","cool"); //messagereturned is:"Java-is-cool"List<String> strings = new LinkedList<>(); strings.add("Java");strings.add("is"); strings.add("cool");Stringmessage=String.join(" ", strings); ...
2.String.join()Example Let us see the example of both variations of the method. First, we will concatenate the strings passed asvarargs. Stringjoined=String.join("/","usr","local","bin"); The program output. usr/local/bin Next, we are joining aListof strings. ...
publicvoidtestCollectJoinStrings(){List<String>ids=Arrays.asList("AAA","BBB","CCC");StringjoinResult=ids.stream().collect(Collectors.joining(","));System.out.println(joinResult);} 有很多同学就提出字符串元素拼接直接用String.join就可以了,完全没必要搞这么复杂。