how to compare string object in arraylist oop code example
Example 1: how to compare two arraylists are equal in java
public class ArrayListExample
{
public static void main(String[] args)
{
ArrayList<String> listOne = new ArrayList<>(Arrays.asList("a", "b", "c", "d", "f"));
ArrayList<String> listTwo = new ArrayList<>(Arrays.asList("a", "b", "c", "d", "e"));
Collections.sort(listOne);
Collections.sort(listTwo);
boolean isEqual = listOne.equals(listTwo);
System.out.println(isEqual);
ArrayList<String> listThree = new ArrayList<>(Arrays.asList("a", "b", "c", "d", "f"));
isEqual = listOne.equals(listThree);
System.out.println(isEqual);
}
}
Example 2: java list of a class has a string that is equal to
public boolean containsName(final List<MyObject> list, final String name){
return list.stream().map(MyObject::getName).filter(name::equals).findFirst().isPresent();
}