String[] stmt = new String[3];

stmt[0] = "CREATE TABLE Department("
    + "dept_no INT PRIMARY KEY, "
    + "name CHAR(50) NOT NULL)";

stmt[1] = "CREATE TABLE Employee("
    + "id INT PRIMARY KEY, "
    + "last_name CHAR(50) NOT NULL, "
    + "first_name CHAR(50) NOT NULL, "
    + "dept_id INT NOT NULL, "
    + "NOT NULL FOREIGN KEY(dept_id) "
    + "REFERENCES Department(dept_no))";

stmt[2] = "CREATE INDEX ON Employee(last_name, first_name)";
        
for(int i = 0; i< stmt.length; i++) {
    ExecuteSQLStatement(stmt[i]);
}

public void ExecuteSQLStatement(String strSQLstmt) {
    PreparedStatement ps;
    try {
        ps = _conn.prepareStatement(strSQLstmt);
        ps.execute();
        ps.close();
        PrintText("Successfully executed: " + strSQLstmt);
    } catch (ULjException e) {
        HandleError(e);
    }
}