java - 将分割数组分配给字符串

Question

我有多个文本框名称为“hobies”

String[] outerArray=request.getParameterValues("hobies");
    for (int i = 0; i < outerArray.length; i++) {
           String[] innerArray=outerArray[i].split(",");
           String str = Arrays.toString(innerArray);
           System.out.println(str);
    } 

我想分配给字符串

 String All = "Swiming,Reading,Singing";

Answer 1

将括号[和]替换为空字符串:

String all = Arrays.toString(outerArray)
                   .replace("[", "")
                   .replace("]", "")
                   .replace(", ", ",");
System.out.println(all);//Swiming,Reading,Singing

替代方法是使用 JDK8 String::join

Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter.