Java 示例 - 在数组中查找对象

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  问题描述

  如何在数组中查找对象或字符串？
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  解决方案

  以下示例使用 Contains 方法在数组中搜索字符串。

  
  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) );
     }
  }
  

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  结果

  上面的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