Example usage for java.sql Statement close

Introduction

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

Prototype

void close() throws SQLException;

Source Link

Document

Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,name varchar(30));");

    String sql = "INSERT INTO survey (id) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);
    ParameterMetaData pmd = pstmt.getParameterMetaData();

    int totalDigits = pmd.getPrecision(1);
    int digitsAfterDecimal = pmd.getScale(1);
    boolean b = pmd.isSigned(1);
    System.out.println("The first parameter ");
    System.out.println("    has precision " + totalDigits);
    System.out.println("    has scale " + digitsAfterDecimal);
    System.out.println("    may be a signed number " + b);

    int count = pmd.getParameterCount();
    System.out.println("count is " + count);

    for (int i = 1; i <= count; i++) {
        int type = pmd.getParameterType(i);
        String typeName = pmd.getParameterTypeName(i);
        System.out.println("Parameter " + i + ":");
        System.out.println("    type is " + type);
        System.out.println("    type name is " + typeName);
    }/*from   w w  w .j  av a  2  s  .co m*/

    st.close();
    conn.close();
}

---

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    conn.setAutoCommit(false);//  ww  w . j  a  v a 2  s.c om
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int, name VARCHAR(30) );");

    String INSERT_RECORD = "insert into survey(id, name) values(?,?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    pstmt.setString(2, "name1");
    pstmt.addBatch();

    pstmt.setString(1, "2");
    pstmt.setString(2, "name2");
    pstmt.addBatch();

    try {
        // execute the batch
        int[] updateCounts = pstmt.executeBatch();
    } catch (BatchUpdateException e) {
        int[] updateCounts = e.getUpdateCounts();
        checkUpdateCounts(updateCounts);
        try {
            conn.rollback();
        } catch (Exception e2) {
            e.printStackTrace();
            System.exit(1);
        }
    }
    // since there were no errors, commit
    conn.commit();

    ResultSet rs = st.executeQuery("SELECT * FROM survey");
    outputResultSet(rs);

    rs.close();
    st.close();
    conn.close();
}

---

From source file:javax.arang.DB.dbcp.BasicDataSourceExample.java

public static void main(String[] args) {
    // First we set up the BasicDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    ///* ww  w  .j  av  a  2s  .com*/
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource("jdbc:mysql://localhost:3306/FX");
    System.out.println("Done.");

    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery("select * from users");
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }
}

---

From source file:GetDateFromMySql.java

public static void main(String args[]) {
    ResultSet rs = null;/*from   w w  w.j av  a 2  s  .c  o  m*/
    Connection conn = null;
    Statement stmt = null;
    try {
        conn = getMySQLConnection();
        stmt = conn.createStatement();
        rs = stmt.executeQuery("select timeCol, dateCol, dateTimeCol from dateTimeTable");
        while (rs.next()) {
            java.sql.Time dbSqlTime = rs.getTime(1);
            java.sql.Date dbSqlDate = rs.getDate(2);
            java.sql.Timestamp dbSqlTimestamp = rs.getTimestamp(3);
            System.out.println("dbSqlTime=" + dbSqlTime);
            System.out.println("dbSqlDate=" + dbSqlDate);
            System.out.println("dbSqlTimestamp=" + dbSqlTimestamp);

            java.util.Date dbSqlTimeConverted = new java.util.Date(dbSqlTime.getTime());
            java.util.Date dbSqlDateConverted = new java.util.Date(dbSqlDate.getTime());
            System.out.println("in standard date");
            System.out.println(dbSqlTimeConverted);
            System.out.println(dbSqlDateConverted);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } 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 {
    Connection conn = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,myDate DATE );");
    String INSERT_RECORD = "insert into survey(id, myDate) values(?, ?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    java.sql.Date sqlDate = new java.sql.Date(new java.util.Date().getTime());
    pstmt.setDate(2, sqlDate);/*from  w w  w.j  a v a 2  s  .  co m*/

    pstmt.executeUpdate();

    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    Calendar cal = Calendar.getInstance();

    // get the TimeZone for "America/Los_Angeles"
    TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
    cal.setTimeZone(tz);

    while (rs.next()) {
        // the JDBC driver will use the time zone information in
        // Calendar to calculate the date, with the result that
        // the variable dateCreated contains a java.sql.Date object
        // that is accurate for "America/Los_Angeles".
        java.sql.Date dateCreated = rs.getDate(2, cal);
        System.out.println(dateCreated);
    }

    rs.close();
    st.close();
    conn.close();
}

---

From source file:PoolingDataSourceExample.java

public static void main(String[] args) {
    ////from  w  ww.  j av  a  2 s  . c o  m
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("org.h2.Driver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then, we set up the PoolingDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource(args[0]);
    System.out.println("Done.");

    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }
}

---

From source file:ManualPoolingDataSourceExample.java

public static void main(String[] args) {
    ////  ww w  .  j av  a 2 s. c  om
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("oracle.jdbc.driver.OracleDriver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then, we set up the PoolingDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource(args[0]);
    System.out.println("Done.");

    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }
}

---

From source file:javax.arang.DB.dbcp.ManualPoolingDataSourceExample.java

public static void main(String[] args) {
    ////from  ww w  .  j a  va 2  s  . c  om
    // First we load the underlying JDBC driver.
    // You need this if you don't use the jdbc.drivers
    // system property.
    //
    System.out.println("Loading underlying JDBC driver.");
    try {
        Class.forName("com.mysql.jdbc.Driver");
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println("Done.");

    //
    // Then, we set up the PoolingDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource("jdbc:mysql://root@localhost:3306:root:dkfkdsid");
    System.out.println("Done.");

    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }
}

---

From source file:ResultSetMetaDataExample.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection("jdbc:odbc:Inventory", "", "");
    Statement stmt = con.createStatement();

    boolean notDone = true;
    String sqlStr = null;// w ww .j a  v a 2s  .  c  o  m
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

    while (notDone) {
        sqlStr = br.readLine();
        if (sqlStr.startsWith("SELECT") || sqlStr.startsWith("select")) {
            ResultSet rs = stmt.executeQuery(sqlStr);
            ResultSetMetaData rsmd = rs.getMetaData();
            int columnCount = rsmd.getColumnCount();
            for (int x = 1; x <= columnCount; x++) {
                String columnName = rsmd.getColumnName(x);
                System.out.print(columnName);
            }
            while (rs.next()) {
                for (int x = 1; x <= columnCount; x++) {
                    if (rsmd.getColumnTypeName(x).compareTo("CURRENCY") == 0)
                        System.out.print("$");
                    String resultStr = rs.getString(x);
                    System.out.print(resultStr + "\t");
                }
            }
        } else if (sqlStr.startsWith("exit"))
            notDone = false;
    }
    stmt.close();
    con.close();
}

---

From source file:dbcp.BasicDataSourceExample.java

public static void main(String[] args) {
    // First we set up the BasicDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //// ww  w .  j  av a 2 s.c o  m
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource("jdbc:MySQL://192.168.150.11:3306/test");
    System.out.println("Done.");

    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;

    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery("select * from Person");
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while (rset.next()) {
            for (int i = 1; i <= numcols; i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
        printDataSourceStats(dataSource);
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (rset != null)
                rset.close();
        } catch (Exception e) {
        }
        try {
            if (stmt != null)
                stmt.close();
        } catch (Exception e) {
        }
        try {
            if (conn != null)
                conn.close();
        } catch (Exception e) {
        }
    }
}

---

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