[FIXED] System.out.print did not work as intended

Issue

I am currently doing a school project in java (I use NetBeans) and I come across this problem. I have done some online research but no luck so far. Here is a snippet of my code: the problem is that whenever I click run file, the console only displays the message in the help() method but not this message "Command [c/r/u/d/x]". the message is only shown after input any of the possible options. Any help would be appreciated.

public static void main(String[] args) throws ClassNotFoundException, SQLException { 
    new TestDB().menu(); 
    } 

    private DBConnector connector; 
    private Connection conn; 
    private DBManager manager; 
    public TestDB() throws ClassNotFoundException, SQLException { 
    connector = new DBConnector(); conn = connector.openConnection(); 
    manager = new DBManager(conn);    
    }

private void testCreate() throws SQLException {
        System.out.println("Adding customer to the database: ");
        manager.addCustomer(read("Email"),read("Password"),read("First 
        Name"),read("Last Name"),read("Phone 
        Num"),read("Address"),read("DOB"));
            System.out.println("Customer added successfully ");
        }
    private String read(String prompt) {
        System.out.print(prompt + ": ");
        System.out.flush();
        return in.nextLine();
    }

    private String read(int prompt) {
        System.out.print(prompt + ": ");
        System.out.flush();
        return in.nextLine();
    }

    private void menu() throws SQLException {
        char c;
        help();
        
        
        while ((c = read("Command [c/r/u/d/f/x]").charAt(0)) != 'x') {
            switch (c) {
                case 'c':
                    testCreate();
                    break;
                case 'r':
                    testFind();
                    break;
                case 'u':
                    testUpdate();
                    break;
                case 'd':
                    testDelete();
                    break;
                default:
                    help();
                    break;
            }
        }
    }

    private void help() {
        System.out.println("Database Operations: \n"
                + "c = Create User \n"
                + "r = Find User \n"
                + "u = Update User \n"
                + "d = Delete User \n");
    }

Solution

Issue resolved, I just replace print() to println() in my read() method. The problem seems to belong to some different between maven and ant project. I try the same code in ant and it execute perfectly.

New update: this site help me: https://github.com/mojohaus/exec-maven-plugin/issues/159. Basically, you just need to change the goal from exec:exec to exec:java

See detail here

Answered By - Quientus