Question

How to filter a Collection based on predicate in Java

Answer 1

import java.util.List;
import java.util.Arrays;
import java.util.stream.Collectors;
import java.util.function.Predicate; 

public class MyClass {
    public static void main(String args[]) {
        List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);

        Predicate<Integer> isOdd = n -> n % 2 != 0;

        List<Integer> oddNumbersList = list.stream()
                                        .filter(isOdd)
                                        .collect(Collectors.toList());

        System.out.println(oddNumbersList); 
    }
}
  
  
  
/*
run:
     
[1, 3, 5, 7, 9, 11]
     
*/

 

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