delete multiple row using checkbox

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April 7, 2017 at 11:49 AM

thank you for help

April 7, 2017 at 1:54 PM

how to delete any checkbox selected value? but this program are not satisfied the condition....i will increase string size then delete file...actually don't know how many data are store data in database...plz help me

March 27, 2012 at 10:17 AM

We are providing you the code where we have specified only three fields bookid,author and title in the database.

1) Create book.jsp

<%@page import="java.sql.*"%>

<form name=myname method=post action="delete.jsp">
<table border="1">
<tr><td></td>
<td><b><u>bookid</u></b></td>
<td><b><u>Author</u></b></td>
<td><b><u>title</u></b></td>
</tr>
<%try{

Connection conn = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql","root", "root");
ResultSet rs = null;
Statement st=null;
st=conn.createStatement();
rs = st.executeQuery("select * from book");
int i=0; while(rs.next()){ %>
<tr><td><input type="checkbox" name="check<%=i%>" value=<%= rs.getString("bookid") %>></td>
<td><%= rs.getString("bookid") %></td>
<td><%= rs.getString("author") %></td>
<td><%= rs.getString("title") %></td>
</tr><%
i++;
}
}catch(SQLException e){ System.out.println(e.getMessage()); } %>
</table>
<input type="submit">
</form>

2) Create delete.jsp

<%@page import="java.sql.*"%>

<%String id[]= new String[10];
for(int i=0;i<10;i++){
id[i]=request.getParameter("check"+i);
out.println(id[i]);
}
%>
<%try{
Connection conn = null;
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql","root", "root");
ResultSet rs = null;
Statement st=null;
st=conn.createStatement();
for(int a=0;a<10;a++){
st.executeUpdate("delete from book where bookid='"+id[a]+"'");

}
}catch(SQLException e){ 
    System.out.println(e.getMessage()); 
    }
    %>

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