Java

@Action
    public void button1Pressed() {
        A a = new A();
        a.openConnection();
    }

// this is the method in the class A

public void openConnection() {
    String connectionString = "jdbc:mysql://172.16.11.12:3306/Projector_Manager";
    try {
       Class.forName("com.mysql.jdbc.Driver");
       conn = DriverManager.getConnection(connectionString,"root","1");  // here comes the error
       insertStatement = conn.prepareStatement("insert into Current_Status values (?,?,?,?,?)");
         } catch (SQLException ex) {
         System.out.println(ex.getMessage());
         } catch (ClassNotFoundException ex) {
         System.out.println(ex.getMessage());
         }
    }

Communications link failure<br />
<br />
Last packet sent to the server was 1 ms ago.

public static void main(String[] args)
{
    A a = new A();
    a.openConnection();
}

PrintStream psMyFile = new PrintStream("myFile.txt");

FileOutputStream fos = new FileOutputStream("myFile.txt", true);
PrintStream psErrorStream = new PrintStream(fos);
System.setErr(psErrorStream);

for (int i=0; i<5; i++)
	psMyFile.println("line " + i);

System.err.println("This is an error 1");
psMyFile.println("after the error");
System.err.println("This is an error 2");
psMyFile.println("finished");