Write a static method getCommonStrings(ArrayList list1, ArrayList list2) that returns a new instance of ArrayList containing all of the strings common to both list1 and list2.

Question

What will be an ideal response?

Answer 1

```
public static ArrayList
getCommonStrings(ArrayList list1,
ArrayList list2){

ArrayList result = new ArrayList();
for(int i=0; i for(int j=0; j if(list1.get(i).equals(list2.get(j)))
result.add(list1.get(i));
}
}

// Remove the duplicates
for(int i=0; i int j = i+1;
while(j if(result.get(i) == result.get(j))
result.remove(j);
else
j++;
}
}

return result;
}
```

This code is in Methods.java. An alternate solution is also given.