Question

我必须向数据库输入一些数据，请参阅我的代码。我在两次执行插入查询时遇到问题。所以我想要一个包含字符串和ArrayList的for循环。

public static ArrayList<String> ApplicationPackageList  = new ArrayList<String>();
public static ArrayList<String> ApplicationList        = new ArrayList<String>();
.
.
.
for (String r : ApplicationPackageList ) {

                DB.insertStmt.bindString(1, URLDecoder.decode(r));
                DB.insertStmt.executeInsert();
            }

for (String s : ApplicationList) {

                // DB.insertStmt.bindString(1, URLDecoder.decode(r));
                DB.insertStmt.bindString(2, URLDecoder.decode(s));
                DB.insertStmt.executeInsert();

            }

Answer 1

List newList  - new ArrayList();
newLIst.addAll(ApplicationList);
newLIst.addAll(ApplicationPackageList );

现在迭代newList，但不会对性能产生任何正面影响，

Answer 2

for(int i=0; i<ApplicationList.size() && i< ApplicationPackageList .size(); i++){
  DB.insertStmt.bindString(1, URLDecoder.decode(ApplicationList.get(i)));  
  DB.insertStmt.bindString(2, URLDecoder.decode(ApplicationPackageList.get(i)));
  DB.insertStmt.executeInsert(); 
}

如何在一个for循环中使用两个数组列表？

2 个答案: