以下实例演示了如何使用 contains () 方法来查找数组中的指定元素:
import java.util.ArrayList; public class Main { public static void main(String[] args) { ArrayList<String> objArray = new ArrayList<String>(); ArrayList<String> objArray2 = new ArrayList<String>(); objArray2.add(0,"common1"); objArray2.add(1,"common2"); objArray2.add(2,"notcommon"); objArray2.add(3,"notcommon1"); objArray.add(0,"common1"); objArray.add(1,"common2"); System.out.println("objArray 的数组元素:"+objArray); System.out.println("objArray2 的数组元素:"+objArray2); System.out.println("objArray 是否包含字符串common2? : " +objArray.contains("common2")); System.out.println("objArray2 是否包含数组 objArray? :" +objArray2.contains(objArray) ); } }