Here, we have passed three stringsJava,isandfunto thejoin()method. These strings are joined using the-delimiter. Example 2: Java String join() With Iterable importjava.util.ArrayList;classMain{publicstaticvoidmain(String[] args){ ArrayList<String> text =newArrayList<>();// adding elements to...
In the second example, we arejoining a string array with a comma delimiter. String[]strArray={"How","To","Do","In","Java"};StringjoinedString=StringUtils.join(strArray);System.out.println(joinedString);//HowToDoInJavaStringjoinedString2=StringUtils.join(strArray,",");System.out.println(...
第一步:了解string.join方法的语法和参数 在介绍具体的使用方法之前,我们需要先了解string.join方法的用法。在Java编程语言中,我们可以使用以下语法调用该方法: Stringjoin(CharSequence delimiter, CharSequence... elements) 其中,delimiter参数指定了元素之间的分隔符,而elements参数是一个可变参数,表示要连接的字符串数...
StringJoineris used to construct a sequence of characters separated by a delimiter and optionally starting with a supplied prefix and ending with a supplied suffix. StringJoineris also used internally by thejoinmethod of theStringclass. Using StringJoiner The following example joins numbers with theStri...
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String all = String.join("/", "A", "B", "C", "D"); System.out.println(all); 1. 2. A/B/C/D 1. 3. 不可变字符串 String类没有提供用于修改字符串的方法。如果希望将greeting="Hello"的内容修改为“Help!”,不能直接地将greeting的最后两个位置的字符修改为‘p’和’!’。正确方法是先...
System.out.println(staticStr4);//join(CharSequence delimiter, Iterable<? extends CharSequence> elements)ArrayList<String> text =newArrayList<>(); text.add("Java"); text.add("is"); text.add("fun"); String staticStr5= String.join("-",text); ...
15:ldc#4// String 沉默 17:invokespecial#5// Method java/lang/String."<init>":(Ljava/lang/String;)V 20:astore_3 21:ldc#6// String 王二 23:astore4 25:aload_1 26:aload_3 27:aload4 29:invokedynamic#7,0// InvokeDynamic #0:makeConcatWithConstants:(Ljava/lang/String;Ljava/lang/String;...
Since Java 8, we can use String.join() method to concatenate strings with a specified delimiter. For advanced usages, use StringJoiner class.
String message = String.join("-","王二","太特么","有趣了"); 1. 输出结果为:王二-太特么-有趣了。 来看一下 join 方法的源码: 复制 publicstaticStringjoin(CharSequence delimiter, CharSequence... elements) {Objects.requireNonNull(delimiter);Objects.requireNonNull(elements);// Numberofelementsnot...