How to add all items in a String array to a vector in Java?

Question

My code looks like this :

Vector<String> My_Vector=new Vector<String>(); String My_Array[]=new String[100];  for (int i=0;i<100;i++) My_Array[i]="Item_"+i; ...... My_Vector.addAll(My_Array); 

But I got an error message, what's the right way to do it, without looping to add each item ?

Frank

Answer 1

Collections.addAll(myVector, myArray); 

This is the preferred way to add the contents of an array into a collection (such as a vector).

https://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#addAll-java.util.Collection-T...-

Adds all of the specified elements to the specified collection. Elements to be added may be specified individually or as an array. The behavior of this convenience method is identical to that of c.addAll(Arrays.asList(elements)), but this method is likely to run significantly faster under most implementations.

Answer 2

The vector.addAll()takes a Collection in parameter. In order to convert array to Collection, you can use Arrays.asList():

My_Vector.addAll(Arrays.asList(My_Array));