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...
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...
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
var joined = String.join(" ", words); System.out.println(joined); } A list can be passed as an argument to theString.joinmethod. var joined = String.join(" ", words); The elements of the list are joined with a single space character. $ java Main.java Today is a beautiful day R...
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"};StringjoinedString=String.join(",",strArray);//How,To,Do,In,Java ...
publicStringguavaJoiner(){returnJoiner.on(newLine).join(ImmutableList.of("Get busy living","or","get busy dying.","--Stephen King")); } 从文件中载入 Java 读取文件和从文件中的输出是相同的。 换句话说,Java 从文件中读到什么就会显示什么,因为对于比较长的文本,可以使用属性文件或者文件的方式来...
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....
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。
将一个List或者数组中的值拼接到一个字符串里并以逗号分隔开,这个场景相信大家都不陌生吧? 如果通过for循环和StringBuilder去循环拼接,还得考虑下最后一个逗号如何处理的问题,很繁琐: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public void testForJoinStrings() { List<String> ids = Arrays.asList("...
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 ...