Tests if at least one element in as satisfies predicate p. - Java java.util

Java examples for java.util:Collection Element

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Description

Tests if at least one element in as satisfies predicate p.

Demo Code

/**/*from   ww  w.  ja  v a2 s  . c  o  m*/
 *  Copyright 2009, 2010 The Regents of the University of California
 *  Licensed under the Educational Community License, Version 2.0
 *  (the "License"); you may not use this file except in compliance
 *  with the License. You may obtain a copy of the License at
 *
 *  http://www.osedu.org/licenses/ECL-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an "AS IS"
 *  BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 *  or implied. See the License for the specific language governing
 *  permissions and limitations under the License.
 *
 */
import java.util.Collection;
import java.util.function.Predicate;

public class Main {
  /**
   * Tests if at least one element in <code>as</code> satisfies predicate
   * <code>p</code>.
   */
  public static <A> boolean exists(Collection<A> as, Predicate<A> p) {
    for (A a : as) {
      if (p.test(a))
        return true;
    }
    return false;
  }
}

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