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Thread: Java with Database

  1. #1
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    Default Java with Database

    Hi

    I have made I database to my program and need to call a sql statment that sends back from the database that it has that numbers of "xxx", want a main class and a gui with it if you know how to
    please write asap.


    to my java code
    public class library2 {
     
    	private Connection connect = null;
    	private Statement statement = null;
    	private ResultSet resultSet = null;
     
    	public void readDataBase() throws Exception {
     
    			Connection con = null;
    			Statement st = null;
    			ResultSet rs = null;
     
    			try {
    				Class.forName("com.mysql.jdbc.Driver").newInstance();
    				con = DriverManager.getConnection("jdbc:mysql:///librarydb",
    						"root", "123123");
     
    				st = con.createStatement();
    				rs = st.executeQuery("SELECT firstName, address, FROM customer");
     
    				while(rs.next()) {
    					int userId = rs.getInt(1);
    					String firstName = rs.getString(2);
    					String address = rs.getString(3);
     
    					System.out.println(userId + ". " + address + ", " +
    							firstName);
    				}
     
    			} catch (Exception e) {
    				System.err.println("Exception: " + e.getMessage());
    			} finally {
    				try {
    					if(rs != null)
    						rs.close();
    					if(st != null)
    						st.close();
    					if(con != null)
    						con.close();
    				} catch (SQLException e) {
    				}
    			}
    		}
    	}


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Java with Database

    want a main class and a gui with it if you know how to
    If you are asking some one to write code for you, you're at the wrong place.
    If you have code with problems, please ask some questions about your problems and post the code to show what you have done.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Java with Database

    Was asking how to do it ??

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: Java with Database

    If you don't know how to write a GUI in Swing, a good place to start is to read the tutorial:
    Trail: Creating a GUI With JFC/Swing (The Java™ Tutorials)
    If you don't understand my answer, don't ignore it, ask a question.

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