Question

I’m connecting Java to Oracle database, everything’s is going pretty okay, except the following problem:

This works okay when I write the whole string within one couple of quotes:

String command =
     "SELECT FIRST_NAME, PHONE_NUMBER, SALARY FROM EMPLOYEES WHERE SALARY < 5000";

BUT as the one above doesn’t look well-designed code I wanted to split the lines:

String command = new StringBuilder(
    "SELECT FIRST_NAME, PHONE_NUMBER, SALARY\n")
            .append("FROM EMPLOYEES\n")
            .append("WHERE SALARY < 5000;")
            .toString();

And meanwhile, I tried plus (+) instead of StringBuilder, but again messed up…

Please help((

Answer 1

Using StringBuilder.append() for a constant value is less efficient than writing the constant directly:

String command =
     "SELECT FIRST_NAME, " + 
     "       PHONE_NUMBER, \n " + 
     "       SALARY \n " + 
     "FROM EMPLOYEES \n" + 
     "WHERE SALARY < 5000";