How To Use Java Variable To Insert Values To Mysql Table?

Hi i am trying to insert the values in to mysql table. i am trying this code. i have assigned values to variable and i want to pass that variable to that insert statement. Is this

Solution 1:

You should use executeUpdate() method whenever your query is an SQL Data Manipulation Language statement. Also, your current query is vulnerable to SQL Injection.

You should use PreparedStatement:

PreparedStatementpstmt= conn.prepareStatement("INSERT INTO `time_entry`(pid,tid,rid,tspend,description) VALUES (?, ?, ?, ?, ?)");\

Then set the variables at those index:

pstmt.setString(1, pid);
// Similarly for the remaining 4 // And then do an executeUpdate
pstmt.executeUpdate();

Solution 2:

Try this,

String driver="com.mysql.jdbc.Driver";
    String url="jdbc:mysql://localhost:3306/dbname";
    String uname="username";
    String pass="password";
    Class.forName(driver);
    Connection c=(Connection) DriverManager.getConnection(url,uname,pass);
    Statement s=c.createStatement();
    s.executeUpdate("INSERT INTO `time_entry`(pid,tid,rid,tspend,description) VALUE ('"+pid+"','"+tid+"','"+rid+"',"+tspent+",'"+des+"')");

Solution 3:

Use a PreparedStatement and set the values using its setXXX() methods.

PreparedStatement pstmt = con.prepareStatement("INSERT INTO `time_entry`        (pid,tid,rid,tspend,description) VALUE 
        (?,?,?,?,?)");
pstmt.setString(1, pid );
pstmt.setString(2, tid);
pstmt.setString(3, rid);
pstmt.setInt(4, tspent);
pstmt.setString(5,des );
pstmt.executeUpdate();

Solution 4:

import java.sql.*;  
classAdbs1{  
publicstaticvoidmain(String args[]){  
try{  
Class.forName("com.mysql.jdbc.Driver");  
Connection con=DriverManager.getConnection(  
"jdbc:mysql://localhost:3306/rk","root","@dmin");  
//here rk is database name, root is username and password  
Statement stmt=con.createStatement();  

stmt.executeUpdate("insert into emp values('rk11','Irfan')");
 // stmt.executeUpdate("delete from  emp where eid ='rk4'");//stmt.executeUpdate("update emp set ename='sallu bhai' where eid='rk5'");

 ResultSet rs=stmt.executeQuery("select * from emp");  
   while(rs.next())  
    System.out.println(rs.getString(1)+"  "+rs.getString(2));  

con.close();  
      }catch(Exception e){ System.out.println(e);}  
    }  
}