如何在 Java 中检查数组中是否存在元素?
以下示例使用 Contains 方法在数组中搜索字符串。
示例
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("Array elements of array1"+objArray); System.out.println("Array elements of array2"+objArray2); System.out.println("Array 1 contains String common2?? " +objArray.contains("common1")); System.out.println("Array 2 contains Array1?? " +objArray2.contains(objArray) ); } }
输出
以上代码示例将产生以下结果。
Array elements of array1[common1, common2] Array elements of array2[common1, common2, notcommon, notcommon1] Array 1 contains String common2?? true Array 2 contains Array1?? false
广告