We can use CollectionUtils of Apache for this purpose. We will

have to create a Predicate that will define the condition for our

filter. Then we can apply this Predicate in filter() method.

Sample code is:

In this example we filter any names that are less than 5 characters

long.

List namesList = asList( "Red", "Blue", "Green" );

List shortNamesList = new ArrayList();

shortNamesList.addAll( namesList );

CollectionUtils.filter( shortNamesList, new Predicate(){

public boolean evaluate( Object input ) {

return ((String) input).length() < 5;

}

} );

We can also use Google Guava library for this.

In Java 8, we can use Predicate to filter a Collection through

Stream.

https://www.baeldung.com/java-collection-filtering