I'm trying to join an array of Strings using the String.join() method. I need the first item of the array to be removed (or set to empty). If I have a string array such as {"a","b","c","d"}, I want to return only b.c.d.
If it can be done with a for loop, that is fine. I currently have:
for (int i=1; i<item.length; i++) { newString += item[i] + "."; } Try using Arrays.copyOfRange to skip the first element of the array:
String.join(".", Arrays.copyOfRange(item, 1, item.length)); 
You can do it as follows:
String.join(".", Arrays.stream(myArray, 1, myArray.length).collect(Collectors.toList())); or if you want the . suffix in the result then use joining collector:
Arrays.stream(myArray, 1, myArray.length) .collect(Collectors.joining(".","",".")); 
String.join Tims approach is definitely better. I always keep forgetting you can pass an array to the join method. nevertheless, I don't want to change it now as Tim answered it first. but if you're concerned about the list construction then one can do Arrays.stream(myArray, 1, myArray.length) .collect(Collectors.joining("."));An alternative with streams:
String result = Arrays.stream(item) .skip(1) .collect(joining(".")); Or this can also be a possible answer
String.join(".",myarray).substring(myarray[0].length()+1); try this
String[] a = new String[] {"a","b","c","d"}; String newString = ""; for (int i=1; i<a.length; i++) { if (i > 0) { newString += a[i] + "."; } } System.out.println(newString); try using following code
public static String getJoined(String []strings) { StringBuilder sbr = new StringBuilder(); // to store joined string // skip first string, iterate over rest of the strings. for(int i=1; i<strings.length; i++) { // append current string and '.' sbr.append(strings[i]).append("."); } // remove last '.' , it will not be required. // if not deleted the result will be contain '.' at end. // e.g for {"a","b","c"} the result will be "b.c." instead of "b.c" sbr.delete(sbr.length()-1, sbr.length()); return sbr.toString(); } 