publicclassJoinExample{publicstaticvoidmain(String[]args)throwsInterruptedException{Threadthread=newThread(newMyRunnable());thread.start();thread.join();// 等待线程执行完毕System.out.println("All threads have finished.");}}classMyRunnableimplementsRunnable{@Overridepublicvoidrun(){try{Thread.sleep(3000)...
函数:Join() 功能:使用选择的分隔符将一个数组合并为一个字符串,这是JavaScript里面提供的方法,在.NET里面也有类似的String.Join方法,可以在指定String数组的每个元素之间串联指定的分隔符 String,从而产生单个串联的字符串,因为大多数遇到的问题就是针对String数组的,所以也勉强够用了。可是Java里面没有这样的方法,这...
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* String message = String.join(" ", strings); * //message returned is: "Java is cool" * * Set<String> strings = new LinkedHashSet<>(); * strings.add("Java"); strings.add("is"); * strings.add("very"); strings.add("cool"); * String message = String.join("-", strings); ...
Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter.
或者可以自己写一个java函数, 来实现java将数组元素组合为一个字符串。 您可以在大约十行代码中轻松编写这样的函数: String combine(String[] s, String glue) { int k = s.length; if ( k == 0 ) { return null; } StringBuilder out = new StringBuilder(); out.append( s[0] ); for ( int x...
❮ String Methods ExampleGet your own Java ServerJoin strings with a space between them:String fruits = String.join(" ", "Orange", "Apple", "Mango"); System.out.println(fruits);Try it Yourself » Definition and UsageThe join() method joins one or more strings with a specified ...
join(Object[], String) 参数是一个object数组和一个string类型的数据，你给传另一个set类型的参数，肯定会报错的喽 HashSet有个方法叫做toArray（）,可以将set类型的数据转换成Object数组
Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter.
public static string Join (string delimiter, Java.Lang.IIterable elements); Parameters delimiter String a sequence of characters that is used to separate each of the elements in the resulting String elements IIterable an Iterable that will have its elements joined together. Returns String a ne...