Java Collection removeIf() Method

The removeIf() method of Java Collection Interface removes the elements of this queue that satisfies the given predicate filter.

Syntax

Parameters

The parameter 'filter' represents a predicate which returns true for the elements to be removed.

Return Value:

The removeIf () method returns a Boolean value 'true' if the collection has removed any element, else it returns 'false'.

Throws

UnsupportedOperationException- if the elements cannot be removed from this collection.

NullPointerException- if the specified filter is null.

Example 1

Output:

Total no : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
 Table of 2 = [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]

Example 2

Output:

People who passed the exam : 
1. Reema  has passed the exam with 98 marks.
2. Raj  has passed the exam with 71 marks.
3. Ravi  has passed the exam with 47 marks.

Example 3

Output:

Albabets : [A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z]
 Vowels = [A, E, I, O, U]