Example usage for java.sql Connection createStatement

Introduction

In this page you can find the example usage for java.sql Connection createStatement.

Prototype

Statement createStatement() throws SQLException;

Source Link

Document

Creates a Statement object for sending SQL statements to the database.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    Connection conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    String insert = "INSERT INTO orders (username, order_date) VALUES ('foobar', '2007-12-13')";
    Statement stmt = conn.createStatement();

    stmt.executeUpdate(insert, Statement.RETURN_GENERATED_KEYS);

    ResultSet keys = stmt.getGeneratedKeys();
    int lastKey = 1;
    while (keys.next()) {
        lastKey = keys.getInt(1);//from   w w  w  .  j  ava 2s.co  m
    }
    System.out.println("Last Key: " + lastKey);
    conn.close();
}

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From source file:DemoGetGeneratedKeysMySQL.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = null;// w w  w.  j a va  2  s . c o m
    ResultSet rs = null;
    try {
        conn = getConnection();
        stmt = conn.createStatement();
        stmt.executeUpdate("insert into animals_table (name) values('newName')");
        rs = stmt.getGeneratedKeys();
        while (rs.next()) {
            ResultSetMetaData rsMetaData = rs.getMetaData();
            int columnCount = rsMetaData.getColumnCount();

            for (int i = 1; i <= columnCount; i++) {
                String key = rs.getString(i);
                System.out.println("key " + i + " is " + key);
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        System.exit(1);
    } finally {
        try {
            rs.close();
            stmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);/*from ww  w.  j  a  v a2 s  . c  om*/

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob(3);

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);/*from  www . j  av a  2s.  c  om*/

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob("myClobColumn");

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar);");
    st.executeUpdate("create view surveyView as (select * from survey);");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')");

    CachedRowSet crs = null;/*ww  w. ja  v  a  2 s . c  om*/
    RowSetMetaData rsMD = new RowSetMetaDataImpl();
    rsMD.setColumnCount(2);
    rsMD.setColumnName(1, "id");
    rsMD.setColumnType(1, Types.VARCHAR);
    rsMD.setColumnName(2, "name");
    rsMD.setColumnType(2, Types.VARCHAR);
    // sets the designated column's table name, if any, to the given String.
    rsMD.setTableName(1, "survey");
    rsMD.setTableName(2, "survey");

    // use a custom made RowSetMetaData object for CachedRowSet object
    crs = new CachedRowSetImpl();
    crs.setMetaData(rsMD);

    crs.moveToInsertRow();
    crs.updateString(1, "1111");
    crs.updateString(2, "alex");
    crs.insertRow();

    crs.moveToInsertRow();
    crs.updateString(1, "2222");
    crs.updateString(2, "jane");
    crs.insertRow();

    // if you want to commit changes from a CachedRowSet
    // object to your desired datasource, then you must
    // create a Connection object.
    //
    //conn = getHSQLConnection();

    // moves the cursor to the remembered cursor position, usually
    // the current row. This method has no effect if the cursor is
    // not on the insert row.
    crs.moveToCurrentRow();

    // when the method acceptChanges() is executed, the CachedRowSet
    // object's writer, a RowSetWriterImpl object, is called behind the
    // scenes to write the changes made to the rowset to the underlying
    // data source. The writer is implemented to make a connection to
    // the data source and write updates to it.
    crs.acceptChanges(conn);
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    System.out.println("Count number of rows in a specific table!");
    Connection con = null;
    int count = 0;
    Class.forName("com.mysql.jdbc.Driver");
    con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", "root", "root");

    Statement st = con.createStatement();
    BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
    ResultSet res = st.executeQuery("SELECT COUNT(*) FROM EMP");
    while (res.next()) {
        count = res.getInt(1);/*from   w  w w  .  j a va  2 s. co  m*/
    }
    System.out.println("Number of row:" + count);
}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.newDocument();
    Element results = doc.createElement("Results");
    doc.appendChild(results);/*w  w  w. ja va 2s .co  m*/

    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager
            .getConnection("jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=c:/access.mdb");

    ResultSet rs = con.createStatement().executeQuery("select * from product");

    ResultSetMetaData rsmd = rs.getMetaData();
    int colCount = rsmd.getColumnCount();

    while (rs.next()) {
        Element row = doc.createElement("Row");
        results.appendChild(row);
        for (int i = 1; i <= colCount; i++) {
            String columnName = rsmd.getColumnName(i);
            Object value = rs.getObject(i);
            Element node = doc.createElement(columnName);
            node.appendChild(doc.createTextNode(value.toString()));
            row.appendChild(node);
        }
    }
    DOMSource domSource = new DOMSource(doc);
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer transformer = tf.newTransformer();
    transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
    transformer.setOutputProperty(OutputKeys.METHOD, "xml");
    transformer.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");
    StringWriter sw = new StringWriter();
    StreamResult sr = new StreamResult(sw);
    transformer.transform(domSource, sr);

    System.out.println(sw.toString());

    con.close();
    rs.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;
    Statement stmt = null;/*from   www  .ja va  2 s .  c  om*/

    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);
    System.out.println("Deleting database...");
    stmt = conn.createStatement();

    String sql = "DROP DATABASE STUDENTS";
    stmt.executeUpdate(sql);

    stmt.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    String url = "jdbc:mysql://localhost/testdb";
    String username = "root";
    String password = "";
    Class.forName("com.mysql.jdbc.Driver");
    Connection conn = null;
    try {//w w w.ja v  a 2s.  co m
        conn = DriverManager.getConnection(url, username, password);
        conn.setAutoCommit(false);

        Statement st = conn.createStatement();
        st.execute("INSERT INTO orders (username, order_date) VALUES ('java', '2007-12-13')",
                Statement.RETURN_GENERATED_KEYS);

        ResultSet keys = st.getGeneratedKeys();
        int id = 1;
        while (keys.next()) {
            id = keys.getInt(1);
        }
        PreparedStatement pst = conn.prepareStatement(
                "INSERT INTO order_details (order_id, product_id, quantity, price) VALUES (?, ?, ?, ?)");
        pst.setInt(1, id);
        pst.setString(2, "1");
        pst.setInt(3, 10);
        pst.setDouble(4, 100);
        pst.execute();

        conn.commit();
        System.out.println("Transaction commit...");
    } catch (SQLException e) {
        if (conn != null) {
            conn.rollback();
            System.out.println("Connection rollback...");
        }
        e.printStackTrace();
    } finally {
        if (conn != null && !conn.isClosed()) {
            conn.close();
        }
    }
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = null;
    Statement stmt = null;//from  ww w . ja v a2 s .c  om

    Class.forName(JDBC_DRIVER);
    conn = DriverManager.getConnection(DB_URL, USER, PASS);
    System.out.println("Deleting database...");
    stmt = conn.createStatement();

    conn = DriverManager.getConnection(DB_URL, USER, PASS);

    stmt = conn.createStatement();

    String sql = "DELETE FROM Person WHERE id = 1";
    stmt.executeUpdate(sql);
    stmt.close();
    conn.close();
}

---

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