How to remove all elements in String array in java? [duplicate]

Answer 1

Usually someone uses collections if something frequently changes.

E.g.

    List<String> someList = new ArrayList<String>();
    // initialize list
    someList.add("Mango");
    someList.add("....");
    // remove all elements
    someList.clear();
    // empty list

An ArrayList for example uses a backing Array. The resizing and this stuff is handled automatically. In most cases this is the appropriate way.

Answer 2

list.clear() is documented for clearing the ArrayList.

list.removeAll() has no documentation at all in Eclipse.

Answer 3

Reassign again. Like example = new String[(size)]

Answer 4

example = new String[example.length];

If you need dynamic collection, you should consider using one of java.util.Collection implementations that fits your problem. E.g. java.util.List.

Answer 5

If example is not final then a simple reassignment would work:

example = new String[example.length];

This assumes you need the array to remain the same size. If that's not necessary then create an empty array:

example = new String[0];

If it is final then you could null out all the elements:

Arrays.fill( example, null );

• See: void Arrays#fill(Object[], Object)
• Consider using an ArrayList or similar collection

Answer 6

Just Re-Initialize the array

example = new String[size]

or If it is inside a running loop,Just Re-declare it again,

**for(int i=1;i<=100;i++) { String example = new String[size] //Your code goes here`` }**