java Simple Java JDBC Program To Execute SQL Select Query

Below is a sample Java JDBC program which takes database connection string as command line arguments and returns the SQL select query output

 

Replace the SQL Select query in the below code with the desired select query and modify the variables depending upon the result you wish to display in the output.

 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 
public class Run_SQL_Select {
 
    static Connection sqlConn = null;
    static Statement sqlStmt = null;
    static ResultSet sqlResultset = null;
 
    public static void main(String[] args) throws SQLException {
 
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
        } catch (ClassNotFoundException exception) {
            System.out.println("Oracle Driver Class Not found Exception: " + exception.toString());
            return;
        }
 
        DriverManager.setLoginTimeout(5);
 
        try {
            String db_host=args[0];
            String db_serviceName=args[1];
            String db_username=args[2];
            String db_password=args[3];
            String jdbc_conn_string="jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST="+db_host+")(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME="+db_serviceName+")))";
            sqlConn = DriverManager.getConnection(jdbc_conn_string, db_username, db_password);
        } 
        catch (SQLException e) {
            System.out.println("Connection Failed! Check output console");
            e.printStackTrace();
            System.exit(1);
            return;
        }
 
        sqlStmt = sqlConn.createStatement();
 
        sqlResultset = sqlStmt.executeQuery("SELECT ABC AS COLUMN1, PQR AS COLUMN2, XYZ AS COLUMN3 from SAMPLE_TABLE");

         System.out.println("COLUMN1_Title COLUMN2_Title COLUMN3_Title");

      while(sqlResultset.next()){
         String var1 = sqlResultset.getString("COLUMN1");
         String var2 = sqlResultset.getString("COLUMN2");
         String var3 = sqlResultset.getString("COLUMN3");      
         System.out.println(var1 + " " + var2 + " " + var3);
      }
      
         sqlResultset.close(); 
        
    }
 
}
 

Copy paste the above code in a file having same name as the class name.

 

Replace the SQL select query with the query of your choice.

 

Compile the code:

 
javac Run_SQL_Select.java
 

Execute the code with the class name:

 
java Run_SQL_Select ${DB_HOST} ${DB_SID} ${DB_USER} ${DB_PASSWORD}
 
0 (0)
Article Rating (No Votes)
Rate this article
Attachments
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Full Name
Email Address
Security Code Security Code
Related Articles RSS Feed
To do a quick check on the number of path present (does not mean all are Enabled] using for loop
Viewed 4094 times since Fri, Jun 8, 2018
Convert JSON to CSV with bash script
Viewed 13228 times since Mon, Jan 20, 2020
bash for do done AIX
Viewed 1958 times since Mon, Jun 4, 2018
O’Reilly’s CD bookshelf
Viewed 13153 times since Wed, Jun 27, 2018
Convert CSV to JSON with jq
Viewed 27656 times since Mon, Jan 20, 2020
Transform XML to CSV Format | Unix String Pattern Manipulation The Ugly Way
Viewed 5921 times since Sun, Jan 9, 2022
Unix - Find command examples
Viewed 4678 times since Fri, Jun 8, 2018
Epoch & Unix Timestamp Conversion Tools
Viewed 63264 times since Fri, Jun 22, 2018
Display basic information about Physical Volumes
Viewed 3580 times since Sun, Jun 3, 2018
Unix - eval command example
Viewed 2111 times since Fri, Jun 8, 2018