Java tutorial
/*
This program is a part of the companion code for Core Java 8th ed.
(http://horstmann.com/corejava)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.io.*;
import java.util.*;
import java.sql.*;
/**
* Executes all SQL statements in a file. Call this program as <br>
* java -classpath driverPath:. ExecSQL commandFile
* @version 1.30 2004-08-05
* @author Cay Horstmann
*/
class ExecSQL {
public static void main(String args[]) {
try {
Scanner in;
if (args.length == 0)
in = new Scanner(System.in);
else
in = new Scanner(new File(args[0]));
Connection conn = getConnection();
try {
Statement stat = conn.createStatement();
while (true) {
if (args.length == 0)
System.out.println("Enter command or EXIT to exit:");
if (!in.hasNextLine())
return;
String line = in.nextLine();
if (line.equalsIgnoreCase("EXIT"))
return;
if (line.trim().endsWith(";")) // remove trailing semicolon
{
line = line.trim();
line = line.substring(0, line.length() - 1);
}
try {
boolean hasResultSet = stat.execute(line);
if (hasResultSet)
showResultSet(stat);
} catch (SQLException ex) {
for (Throwable e : ex)
e.printStackTrace();
}
}
} finally {
conn.close();
}
} catch (SQLException e) {
for (Throwable t : e)
t.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Gets a connection from the properties specified in the file database.properties
* @return the database connection
*/
public static Connection getConnection() throws SQLException, IOException {
Properties props = new Properties();
FileInputStream in = new FileInputStream("database.properties");
props.load(in);
in.close();
String drivers = props.getProperty("jdbc.drivers");
if (drivers != null)
System.setProperty("jdbc.drivers", drivers);
String url = props.getProperty("jdbc.url");
String username = props.getProperty("jdbc.username");
String password = props.getProperty("jdbc.password");
return DriverManager.getConnection(url, username, password);
}
/**
* Prints a result set.
* @param stat the statement whose result set should be printed
*/
public static void showResultSet(Statement stat) throws SQLException {
ResultSet result = stat.getResultSet();
ResultSetMetaData metaData = result.getMetaData();
int columnCount = metaData.getColumnCount();
for (int i = 1; i <= columnCount; i++) {
if (i > 1)
System.out.print(", ");
System.out.print(metaData.getColumnLabel(i));
}
System.out.println();
while (result.next()) {
for (int i = 1; i <= columnCount; i++) {
if (i > 1)
System.out.print(", ");
System.out.print(result.getString(i));
}
System.out.println();
}
result.close();
}
}
//File: database.properties
#jdbc.drivers=org.apache.derby.jdbc.ClientDriver jdbc.url=jdbc:derby://localhost:1527/COREJAVA;create=true
jdbc.username=dbuser jdbc.password=secret
CREATE TABLE
BooksAuthors (ISBN CHAR(13),
Author_Id CHAR(4), Seq_No INT);
INSERT INTO
BooksAuthors VALUES ('0-201-96426-0', 'DATE', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-96426-0', 'DARW', 2);
INSERT INTO
BooksAuthors VALUES ('0-19-501919-9', 'ALEX', 1);
INSERT INTO
BooksAuthors VALUES ('0-19-501919-9', 'ISHI', 2);
INSERT INTO
BooksAuthors VALUES ('0-19-501919-9', 'SILV', 3);
INSERT INTO
BooksAuthors VALUES ('0-471-11709-9', 'SCHN', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-84840-6', 'FOLE', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-84840-6', 'VAND', 2);
INSERT INTO
BooksAuthors VALUES ('0-201-84840-6', 'FEIN', 3);
INSERT INTO
BooksAuthors VALUES ('0-201-84840-6', 'HUGH', 4);
INSERT INTO
BooksAuthors VALUES ('0-7434-1146-3', 'STOL', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-63361-2', 'GAMM', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-63361-2', 'HELM', 2);
INSERT INTO
BooksAuthors VALUES ('0-201-63361-2', 'JOHN', 3);
INSERT INTO
BooksAuthors VALUES ('0-201-63361-2', 'VLIS', 4);
INSERT INTO
BooksAuthors VALUES ('0-262-03293-7', 'CORM', 1);
INSERT INTO
BooksAuthors VALUES ('0-262-03293-7', 'LEIS', 2);
INSERT INTO
BooksAuthors VALUES ('0-262-03293-7', 'RIVE', 3);
INSERT INTO
BooksAuthors VALUES ('0-262-03293-7', 'STEI', 4);
INSERT INTO
BooksAuthors VALUES ('0-201-44124-1', 'HOPC', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-44124-1', 'ULLM', 2);
INSERT INTO
BooksAuthors VALUES ('0-201-44124-1', 'MOTW', 3);
INSERT INTO
BooksAuthors VALUES ('0-596-00048-0', 'FLAN', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-89683-4', 'KNUT', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-89684-2', 'KNUT', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-89685-0', 'KNUT', 1);
INSERT INTO
BooksAuthors VALUES ('0-13-110362-8', 'KERN', 1);
INSERT INTO
BooksAuthors VALUES ('0-13-110362-8', 'RITC', 2);
INSERT INTO
BooksAuthors VALUES ('0-201-70073-5', 'STRO', 1);
INSERT INTO
BooksAuthors VALUES ('0-596-00108-8', 'RAYM', 1);
INSERT INTO
BooksAuthors VALUES ('0-684-83130-9', 'KAHN', 1);
INSERT INTO
BooksAuthors VALUES ('0-201-83595-9', 'BROO', 1);
INSERT INTO
BooksAuthors VALUES ('0-679-60261-5', 'KIDD', 1);
INSERT INTO
BooksAuthors VALUES ('1-56884-203-1', 'GARF', 1);
INSERT INTO
BooksAuthors VALUES ('1-56884-203-1', 'WEIS', 2);
INSERT INTO
BooksAuthors VALUES ('1-56884-203-1', 'STRA', 3);
INSERT INTO
BooksAuthors VALUES ('0-13-020601-6', 'NEME', 1);
INSERT INTO
BooksAuthors VALUES ('0-13-020601-6', 'SNYD', 2);
INSERT INTO
BooksAuthors VALUES ('0-13-020601-6', 'SEEB', 3);
INSERT INTO
BooksAuthors VALUES ('0-13-020601-6', 'HEIN', 4);
SELECT * FROM BooksAuthors;
CREATE TABLE Books (Title CHAR(60),
ISBN CHAR(13),
Publisher_Id CHAR(6),
Price DECIMAL(10,2));
INSERT INTO
Books VALUES ('A Guide to the SQL Standard', '0-201-96426-0', '0201', 47.95);
INSERT INTO
Books VALUES ('A Pattern Language: Towns, Buildings, Construction', '0-19-501919-9', '019', 65.00);
INSERT INTO
Books VALUES ('Applied Cryptography', '0-471-11709-9', '0471', 60.00);
INSERT INTO
Books VALUES ('Computer Graphics: Principles and Practice', '0-201-84840-6', '0201', 79.99);
INSERT INTO
Books VALUES ('Cuckoo''s Egg', '0-7434-1146-3', '07434', 13.95);
INSERT INTO
Books VALUES ('Design Patterns', '0-201-63361-2', '0201', 54.99);
INSERT INTO
Books VALUES ('Introduction to Algorithms', '0-262-03293-7', '0262', 80.00);
INSERT INTO
Books VALUES ('Introduction to Automata Theory, Languages, and Computation', '0-201-44124-1', '0201', 105.00);
INSERT INTO
Books VALUES ('JavaScript: The Definitive Guide', '0-596-00048-0', '0596', 44.95);
INSERT INTO
Books VALUES ('The Art of Computer Programming vol. 1', '0-201-89683-4', '0201', 59.99);
INSERT INTO
Books VALUES ('The Art of Computer Programming vol. 2', '0-201-89684-2', '0201', 59.99);
INSERT INTO
Books VALUES ('The Art of Computer Programming vol. 3', '0-201-89685-0', '0201', 59.99);
INSERT INTO
Books VALUES ('The C Programming Language', '0-13-110362-8', '013', 42.00);
INSERT INTO
Books VALUES ('The C++ Programming Language', '0-201-70073-5', '0201', 64.99);
INSERT INTO
Books VALUES ('The Cathedral and the Bazaar', '0-596-00108-8', '0596', 16.95);
INSERT INTO
Books VALUES ('The Codebreakers', '0-684-83130-9', '07434', 70.00);
INSERT INTO
Books VALUES ('The Mythical Man-Month', '0-201-83595-9', '0201', 29.95);
INSERT INTO
Books VALUES ('The Soul of a New Machine', '0-679-60261-5', '0679', 18.95);
INSERT INTO
Books VALUES ('The UNIX Hater''s Handbook', '1-56884-203-1', '0471', 16.95);
INSERT INTO
Books VALUES ('UNIX System Administration Handbook', '0-13-020601-6', '013', 68.00);
SELECT * FROM Books
CREATE TABLE Authors (Author_Id CHAR(4),
Name CHAR(25),
Fname CHAR(25));
INSERT INTO
Authors VALUES ('ALEX', 'Alexander', 'Christopher');
INSERT INTO
Authors VALUES ('BROO', 'Brooks', 'Frederick P.');
INSERT INTO
Authors VALUES ('CORM', 'Cormen', 'Thomas H.');
INSERT INTO
Authors VALUES ('DATE', 'Date', 'C. J.');
INSERT INTO
Authors VALUES ('DARW', 'Darwen', 'Hugh');
INSERT INTO
Authors VALUES ('FEIN', 'Feiner', 'Steven K.');
INSERT INTO
Authors VALUES ('FLAN', 'Flanagan', 'David');
INSERT INTO
Authors VALUES ('FOLE', 'Foley', 'James D.');
INSERT INTO
Authors VALUES ('GAMM', 'Gamma', 'Erich');
INSERT INTO
Authors VALUES ('GARF', 'Garfinkel', 'Simson');
INSERT INTO
Authors VALUES ('HEIN', 'Hein', 'Trent R.');
INSERT INTO
Authors VALUES ('HELM', 'Helm', 'Richard');
INSERT INTO
Authors VALUES ('HOPC', 'Hopcroft', 'John E.');
INSERT INTO
Authors VALUES ('HUGH', 'Hughes', 'John F.');
INSERT INTO
Authors VALUES ('ISHI', 'Ishikawa', 'Sara');
INSERT INTO
Authors VALUES ('JOHN', 'Johnson', 'Ralph');
INSERT INTO
Authors VALUES ('KAHN', 'Kahn', 'David');
INSERT INTO
Authors VALUES ('KERN', 'Kernighan', 'Brian');
INSERT INTO
Authors VALUES ('KIDD', 'Kidder', 'Tracy');
INSERT INTO
Authors VALUES ('KNUT', 'Knuth', 'Donald E.');
INSERT INTO
Authors VALUES ('LEIS', 'Leiserson', 'Charles E.');
INSERT INTO
Authors VALUES ('MOTW', 'Motwani', 'Rajeev');
INSERT INTO
Authors VALUES ('NEME', 'Nemeth', 'Evi');
INSERT INTO
Authors VALUES ('RAYM', 'Raymond', 'Eric');
INSERT INTO
Authors VALUES ('RITC', 'Ritchie', 'Dennis');
INSERT INTO
Authors VALUES ('RIVE', 'Rivest', 'Ronald R.');
INSERT INTO
Authors VALUES ('SCHN', 'Schneier', 'Bruce');
INSERT INTO
Authors VALUES ('SEEB', 'Seebass', 'Scott');
INSERT INTO
Authors VALUES ('SILV', 'Silverstein', 'Murray');
INSERT INTO
Authors VALUES ('SNYD', 'Snyder', 'Garth');
INSERT INTO
Authors VALUES ('STEI', 'Stein', 'Clifford E.');
INSERT INTO
Authors VALUES ('STOL', 'Stoll', 'Clifford');
INSERT INTO
Authors VALUES ('STRA', 'Strassmann', 'Steven');
INSERT INTO
Authors VALUES ('STRO', 'Stroustrup', 'Bjarne');
INSERT INTO
Authors VALUES ('ULLM', 'Ullman', 'Jeffrey D.');
INSERT INTO
Authors VALUES ('VAND', 'van Dam', 'Andries');
INSERT INTO
Authors VALUES ('VLIS', 'Vlissides', 'John');
INSERT INTO
Authors VALUES ('WEIS', 'Weise', 'Daniel');
SELECT * FROM Authors;
CREATE TABLE Publishers (Publisher_Id CHAR(6),
Name CHAR(30),
URL CHAR(80));
INSERT INTO
Publishers VALUES ('0201', 'Addison-Wesley', 'www.aw-bc.com');
INSERT INTO
Publishers VALUES ('0471', 'John Wiley & Sons', 'www.wiley.com');
INSERT INTO
Publishers VALUES ('0262', 'MIT Press', 'mitpress.mit.edu');
INSERT INTO
Publishers VALUES ('0596', 'O''Reilly', 'www.ora.com');
INSERT INTO
Publishers VALUES ('019', 'Oxford University Press', 'www.oup.co.uk');
INSERT INTO
Publishers VALUES ('013', 'Prentice Hall', 'www.phptr.com');
INSERT INTO
Publishers VALUES ('0679', 'Random House', 'www.randomhouse.com');
INSERT INTO
Publishers VALUES ('07434', 'Simon & Schuster', 'www.simonsays.com');
SELECT * FROM Publishers;