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:
/* author by itshubao.com 文件名:Main.java */ import java.util.ArrayList; public class Main { public static void main(String[] args) { ArrayList objArray = new ArrayList(); ArrayList objArray2 = new ArrayList(); 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("common1")); System.out.println("objArray2 是否包含数组 objArray? :" +objArray2.contains(objArray) ); } }
以上代码运行输出结果为:
objArray 的数组元素:[common1, common2] objArray2 的数组元素:[common1, common2, notcommon, notcommon1] objArray 是否包含字符串common2? : true objArray2 是否包含数组 objArray? :false