So how can I remove a space(s) from an array of a string...
Taking an example, I have a string called list:
String[] list ={"Apple ", "Mel on", " Ice -cream ", Television"};
Can anyone please guide on what methods I should be using?
I've already tried using .replace().
For a single string:
String str = "look! Spaces! ";
System.out.println(str.replaceAll(" ","")); //Will print "look!Spaces!"
For an array:
String[] arr = ...
for (int i = 0; i < arr.length; i++) {
arr[i] = arr[i].replaceAll(" ", "");
}
Or using Java 8 streams (although this one returns a List, not an array):
String[] arr = ...
List<String> l = Arrays.stream(arr).map(i -> i.replaceAll(" ", "")).collect(Collectors.toList());
Use the trim() method
String s1=" hello string ";
System.out.println(s1.trim());
trim() method only removes leading and trailing white spaces. If you want to remove spaces between words like Mel on, you can use the replaceAll() method.
public static void main(String[] args) {
String[] list ={"Apple ", "Mel on", " Ice -cream ", "Television"};
for (int i = 0; i < list.length; i++) {
list[i] = list[i].replaceAll(" ", "");
}
for (int i = 0; i < list.length; i++) {
System.out.println(list[i]);
}
}
Output
Apple
Melon
Ice-cream
Television
