Example usage for java.sql Statement executeQuery

Introduction

In this page you can find the example usage for java.sql Statement executeQuery.

Prototype

ResultSet executeQuery(String sql) throws SQLException;

Source Link

Document

Executes the given SQL statement, which returns a single ResultSet object.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {

    Class.forName(DRIVER);/* ww  w  . j a  v a2 s .c  o  m*/
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    Statement statement = connection.createStatement();
    ResultSet resultSet = statement.executeQuery("SELECT * FROM users");

    ResultSetMetaData metadata = resultSet.getMetaData();
    int columnCount = metadata.getColumnCount();

    ArrayList<String> columns = new ArrayList<String>();
    for (int i = 1; i < columnCount; i++) {
        String columnName = metadata.getColumnName(i);
        columns.add(columnName);
    }

    while (resultSet.next()) {
        for (String columnName : columns) {
            String value = resultSet.getString(columnName);
            System.out.println(columnName + " = " + value);
        }
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    String url = "jdbc:odbc:databaseName";
    String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
    String user = "guest";
    String password = "guest";

    String theStatement = "SELECT lastname, firstname FROM autors";

    try {//from  www  . ja v  a  2  s .c  o m
        Class.forName(driver);
        Connection connection = DriverManager.getConnection(url, user, password);
        Statement queryAuthors = connection.createStatement();
        ResultSet theResults = queryAuthors.executeQuery(theStatement);

        queryAuthors.close();
    } catch (ClassNotFoundException cnfe) {
        System.err.println(cnfe);
    } catch (SQLException sqle) {
        String sqlMessage = sqle.getMessage();
        String sqlState = sqle.getSQLState();
        int vendorCode = sqle.getErrorCode();
        System.err.println("Exception occurred:");
        System.err.println("Message: " + sqlMessage);
        System.err.println("SQL state: " + sqlState);
        System.err.println("Vendor code: " + vendorCode + "\n----------------");
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    String url = "jdbc:odbc:technical_library";
    String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
    String theStatement = "SELECT authid, lastname, firstname, email FROM authors ORDER BY authid";

    try {//from   w  w  w  . ja v a  2  s .com
        Class.forName(driver);
        Connection connection = DriverManager.getConnection(url, "guest", "guest");
        Statement queryAuthors = connection.createStatement();
        ResultSet results = queryAuthors.executeQuery(theStatement);

        String lastname, firstname, email;
        int id;
        while (results.next()) {
            id = results.getInt(1);
            lastname = results.getString(2);
            firstname = results.getString(3);
            email = results.getString(4);

            if (results.wasNull()) {
                email = "no email";
            }
            System.out.println(Integer.toString(id) + ", " + lastname.trim() + ", " + firstname.trim() + ", "
                    + email.trim());
        }
        queryAuthors.close();
    } catch (Exception e) {
        System.err.println(e);
    }
}

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From source file:com.linuxrouter.netcool.test.DbPoolTest.java

public static void main(String[] args) {
    String host = "192.168.0.201";
    String port = "4100";
    String dbName = "alerts";
    String url = "jdbc:sybase:Tds:" + host + ":" + port + "/" + dbName;
    Driver drv = new com.sybase.jdbc3.jdbc.SybDriver();
    try {//from w  ww .  j a va  2s .  c  o  m
        DriverManager.registerDriver(drv);
    } catch (SQLException ex) {
        Logger.getLogger(DbPoolTest.class.getName()).log(Level.SEVERE, null, ex);
    }
    ConnectionFactory connectionFactory = new DriverManagerConnectionFactory(url, "root", "omni12@#");
    PoolableConnectionFactory poolableConnectionFactory = new PoolableConnectionFactory(connectionFactory,
            null);
    ObjectPool<PoolableConnection> connectionPool = new GenericObjectPool<>(poolableConnectionFactory);
    poolableConnectionFactory.setPool(connectionPool);
    PoolingDataSource<PoolableConnection> poolingDataSource = new PoolingDataSource<>(connectionPool);
    try {
        Connection con = poolingDataSource.getConnection();
        Statement st = con.createStatement();
        ResultSet rs = st.executeQuery("select * from alerts.status");
        int x = 0;
        while (rs.next()) {
            //System.out.println(":::" + rs.getString(1));
            x++;
        }
        System.out.println("::::::" + x);
    } catch (SQLException ex) {
        Logger.getLogger(DbPoolTest.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection("jdbc:odbc:Contacts");
    Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("select * from employee");
    rs.moveToInsertRow();//from   ww w  .  ja va2s. co m

    rs.updateInt(1, 150);
    rs.updateString("First_Name", "Nigel");
    rs.updateString("Last_Name", "Thornebury");

    rs.insertRow();
}

---

From source file:Main.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection("jdbc:odbc:Contacts");
    Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("select * from employee");
    rs.moveToInsertRow();/*from  w w w  .jav  a 2  s  . co  m*/

    rs.updateInt("Contact_ID", 150);
    rs.updateString("First_Name", "Nigel");
    rs.updateString("Last_Name", "Thornebury");

    rs.insertRow();
}

---

From source file:History.PieChart_DB.java

public static void main(String[] args) throws Exception {

    String mobilebrands[] = { "IPhone 5s", "SamSung Grand", "MotoG", "Nokia Lumia" };
    int statOfRepair = 0;
    java.util.Date now = new java.util.Date();
    String adminDate = (now.getYear() + 1900) + "-" + (now.getMonth() + 1) + "-" + now.getDate();
    /* Create MySQL Database Connection */
    Class.forName("com.mysql.jdbc.Driver");
    Connection connect = ConnectDatabase.connectDb("win", "win016");

    Statement statement = connect.createStatement();
    ResultSet resultSet = statement
            .executeQuery("SELECT COUNT(transID) AS statRepair FROM `Transaction` WHERE dateTime LIKE \'"
                    + adminDate + "%\' AND action LIKE 'Repair'");
    DefaultPieDataset dataset = new DefaultPieDataset();

    while (resultSet.next()) {
        dataset.setValue(resultSet.getString("statRepair"),
                Double.parseDouble(resultSet.getString("unit_sale")));
    }/*ww  w .j  a  va 2s . co m*/

    JFreeChart chart = ChartFactory.createPieChart("History", // chart title           
            dataset, // data           
            true, // include legend          
            true, false);

    int width = 560; /* Width of the image */
    int height = 370; /* Height of the image */
    File pieChart = new File("Pie_Chart.jpeg");
    ChartUtilities.saveChartAsJPEG(pieChart, chart, width, height);
}

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From source file:Select.java

public static void main(String args[]) {
    String url = "jdbc:msql://carthage.imaginary.com/ora";
    Connection con = null;/*  w w  w. ja v a2 s . com*/

    try {
        String driver = "com.imaginary.sql.msql.MsqlDriver";

        Class.forName(driver).newInstance();
    } catch (Exception e) {
        System.out.println("Failed to load mSQL driver.");
        return;
    }
    try {
        con = DriverManager.getConnection(url, "borg", "");
        Statement select = con.createStatement();
        ResultSet result = select.executeQuery("SELECT test_id, test_val FROM test");

        System.out.println("Got results:");
        while (result.next()) { // process results one row at a time
            int key = result.getInt(1);
            String val = result.getString(2);

            System.out.println("key = " + key);
            System.out.println("val = " + val);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (con != null) {
            try {
                con.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

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From source file:JndiDataSource.java

public static void main(String args[]) throws Exception {
    String sp = "com.sun.jndi.fscontext.RefFSContextFactory";
    String file = "file:/e:/JNDI";
    String dataSourceName = "jdbc/myDatabase";

    Hashtable env = new Hashtable();
    env.put(Context.INITIAL_CONTEXT_FACTORY, sp);
    env.put(Context.PROVIDER_URL, file);
    ctx = new InitialContext(env);

    bindDataSource(ctx, dataSourceName);

    DataSource ds = null;/* w w w  .j a  v  a 2 s  .co m*/
    ds = (DataSource) ctx.lookup(dataSourceName);

    Connection conn = ds.getConnection();

    Statement stmt = conn.createStatement();
    ResultSet rs = stmt.executeQuery("SELECT Name FROM Employees");

    while (rs.next())
        System.out.println(rs.getString("name"));

    ctx.close();
    rs.close();
    stmt.close();
    conn.close();

    ctx.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    try {//from  w w  w  . j a va2  s  .c  o m
        String url = "jdbc:odbc:yourdatabasename";
        String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
        String user = "guest";
        String password = "guest";

        FileInputStream fis = new FileInputStream("sometextfile.txt");

        Class.forName(driver);
        Connection connection = DriverManager.getConnection(url, user, password);
        Statement createTable = connection.createStatement();
        createTable.executeUpdate("CREATE TABLE source_code (name char(20), source LONGTEXT)");
        String ins = "INSERT INTO source_code VALUES(?,?)";
        PreparedStatement statement = connection.prepareStatement(ins);

        statement.setString(1, "TryInputStream2");
        statement.setAsciiStream(2, fis, fis.available());

        int rowsUpdated = statement.executeUpdate();
        System.out.println("Rows affected: " + rowsUpdated);
        Statement getCode = connection.createStatement();
        ResultSet theCode = getCode.executeQuery("SELECT name,source FROM source_code");
        BufferedReader reader = null;
        String input = null;

        while (theCode.next()) {
            reader = new BufferedReader(new InputStreamReader(theCode.getAsciiStream(2)));
            while ((input = reader.readLine()) != null) {
                System.out.println(input);
            }
        }
        connection.close();
    } catch (Exception e) {
        System.err.println(e);
    }
}

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