public static void isiTabel(){
        final String JDBC_DRIVER = "com.mysql.jdbc.Driver";  
        final String DB_URL = "jdbc:mysql://localhost/perpus";

        //  Database credentials
        final String USER = "root";
        final String PASS = "";

        Connection conn = null;
   Statement stmt = null;
   try{
      //STEP 2: Register JDBC driver
      Class.forName("com.mysql.jdbc.Driver");

      //STEP 3: Open a connection
      System.out.println("Connecting to a selected database...");
      conn = DriverManager.getConnection(DB_URL, USER, PASS);
      System.out.println("Connected database successfully...");
      
      //STEP 4: Execute a query
      System.out.println("Creating statement...");
      stmt = conn.createStatement();

      String sql = "SELECT * FROM anggota where 1";
      ResultSet rs = stmt.executeQuery(sql);
      //STEP 5: Extract data from result set
      int i=0;
      while(rs.next()){
         //Retrieve by column name
         String nim  = rs.getString("nim");
         String nama = rs.getString("nama");
         String jurusan = rs.getString("jurusan");
         String alamat = rs.getString("alamat");

         
         //Display values
         jTable4.getModel().setValueAt(nim, i, 0);
         jTable4.getModel().setValueAt(nama, i, 1);
         jTable4.getModel().setValueAt(jurusan, i, 2);
         jTable4.getModel().setValueAt(alamat, i, 3);
         i++;
      }
      rs.close();
   }catch(SQLException se){
      //Handle errors for JDBC
      se.printStackTrace();
   }catch(Exception e){
      //Handle errors for Class.forName
      e.printStackTrace();
   }finally{
      //finally block used to close resources
      try{
         if(stmt!=null)
            conn.close();
      }catch(SQLException se){
      }// do nothing
      try{
         if(conn!=null)
            conn.close();
      }catch(SQLException se){
         se.printStackTrace();
      }//end finally try
   }//end try

    }