Question

我正在将数据从jtable发送到数据库并且它工作正常，但我不知道为什么它会引发一个错误，即Array Index Out Of Bounds 1＆gt; = 1 或阵列索引超出界限1> = 1

这是我的代码

public void save()
{
    try
    {
    String Date[] =new String[10];
    String Bill_No[] =new String[10];
    String M_Id[] =new String[10];
    String C_Name[] =new String[10]; // C_Name is array and index 10 means no. of row
    String Item_No[]=new String[10];
    String Product[]=new String[10];
    String Price[] =new String[10];
    String Quantity[] =new String[10];
    String Amount[] =new String[10];
    String Points[] = new String[10];

    for(int i=0; i<12; i++) //loop from 0 row to 10
    {
    Date[i]=jTable1.getValueAt(i,0).toString(); // it get value from 0 row and 0 column
    Bill_No[i] =jTable1.getValueAt(i,1).toString();
    M_Id[i] =jTable1.getValueAt(i, 2).toString();
    C_Name[i]=jTable1.getValueAt(i,3).toString();  // it get value from 0 row and 1 column
    Item_No[i] =jTable1.getValueAt(i,4).toString();
    Product[i]=jTable1.getValueAt(i,5).toString();
    Price[i]=jTable1.getValueAt(i,6).toString();
    Quantity[i]=jTable1.getValueAt(i,7).toString();
    Amount[i]=jTable1.getValueAt(i,8).toString();
    Points[i]=jTable1.getValueAt(i,9).toString();

   //similarly for more column  
    try
    {
        s=conn.createStatement();
        int row=s.executeUpdate( "insert into E_Costumes values('"+Date[i]+"','"+Bill_No[i]+"','"+M_Id[i]+"','"+C_Name[i]+"','"+Item_No[i]+"','"+Product[i]+"','"+Price[i]+"','"+Quantity[i]+"','"+Amount[i]+"','"+Points[i]+"')");
        if(row>0)
        {
            JOptionPane.showMessageDialog(this, "ITEM ADDED SUCCESSFULLY.");
            quantity_sub();
        }
    }

    catch(Exception ex)
    {
        JOptionPane.showMessageDialog(this, ex);

    }
    }
}    
catch(Exception ex)
{
    JOptionPane.showMessageDialog(this, ex);
}

}

Answer 1

for(int i=0; i<12; i++)//0,1,2,3,4,5,6,7,8,9,10,11
                                              |  |
                                        ^^^^^^^^^^^
               But for index 10 and 11 your arrays don't have element 
               because all arrays will have elements from 0....to...9

如果所有数组的长度都相同，则应将长度声明为常量，

private static final int COMMON_ARRAY_LENGHT = 10;

并在每个数组初始化和循环中使用它，

String Date[] =new String[COMMON_ARRAY_LENGHT];
//..And so on

同时你的循环将是，

for(int i=0; i < COMMON_ARRAY_LENGHT; i++)

Answer 2

您提供的数组大小为String C_Name [] = new String [10];其中只能添加0到9。当您尝试在数组中添加超出索引的元素时。

或for（int i = 0; i＆lt; 10; i ++）会解决你的问题请查看更新的答案

数组索引超出界限例外1> = 1

2 个答案: