how to add string to array in java 1

how to add string to array in java

ArrayList ar = new ArrayList();
String s1 ="Test1";
String s2 ="Test2";
String s3 ="Test3";
ar.add(s1);
ar.add(s2);
ar.add(s3);

String s4 ="Test4";
ar.add(s4);

Here is what the above code is Doing:
1. Create an ArrayList of type String
2. Create 3 String variables
3. Add the 3 String variables to the ArrayList
4. Create another String variable
5. Add the new String variable to the ArrayList

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