Example usage for java.sql Connection close

List of usage examples for java.sql Connection close

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Introduction

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

Prototype

void close() throws SQLException;

Source Link

Document

Releases this Connection object's database and JDBC resources immediately instead of waiting for them to be automatically released.

Usage

From source file:Main.java

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

    DatabaseMetaData mtdt = conn.getMetaData();
    System.out.println("ANSI92 Entry Level: " + mtdt.supportsANSI92EntryLevelSQL());
    System.out.println("ANSI92 Intermediate: " + mtdt.supportsANSI92IntermediateSQL());
    System.out.println("ANSI92 Full SQL: " + mtdt.supportsANSI92FullSQL());
    System.out.println("Minimum SQL Grammar: " + mtdt.supportsMinimumSQLGrammar());
    System.out.println("Core SQL Grammar: " + mtdt.supportsCoreSQLGrammar());
    System.out.println("Extended SQL Grammar: " + mtdt.supportsExtendedSQLGrammar());

    conn.close();
}

From source file:UpdateableRs.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();
    stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("SELECT ssn, name, salary FROM EMPLOYEES");
    printRs(rs);//from w  w  w  .j ava 2  s  .  com

    rs.beforeFirst();

    while (rs.next()) {
        double newSalary = rs.getDouble("salary") * 1.053;
        rs.updateDouble("salary", newSalary);
        rs.updateRow();
    }
    printRs(rs);
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();

    DatabaseMetaData meta = conn.getMetaData();
    try {/* w w w  .  ja va  2  s  . c o  m*/
        int majorVersion = meta.getDatabaseMajorVersion();
        System.out.println("major Version:" + majorVersion);
    } catch (Exception e) {
        System.out.println("major Version:unsupported feature");
    }

    try {
        int minorVersion = meta.getDatabaseMinorVersion();
        System.out.println("minorVersion:" + minorVersion);
    } catch (Exception e) {
        System.out.println("minorVersion unsupported feature");
    }

    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String url = "jdbc:mysql://192.168.100.100:3306/";
    String dbName = "databaseName";
    Statement stmt = null;//from   ww w .ja va  2  s.c  o  m
    ResultSet result = null;
    String driver = "com.mysql.jdbc.Driver";
    String databaseUserName = "admin";
    String databasePassword = "root";
    Class.forName(driver).newInstance();
    Connection conn = DriverManager.getConnection(url + dbName, databaseUserName, databasePassword);
    stmt = conn.createStatement();
    result = null;
    String password, username;
    result = stmt.executeQuery("select * from userTable where username ='user1' ");
    if (!result.isBeforeFirst()) {
        System.out.println("resultset contin no rows");
    }
    while (result.next()) {
        username = result.getString("username");
        password = result.getString("password");
        System.out.println(username + "  " + password);
    }
    conn.close();
}

From source file:UpdateRecordsUsingPreparedStatement.java

public static void main(String[] args) throws Exception {
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {/*from   w w  w.  jav  a 2 s  .  c  om*/
        conn = getConnection();
        String query = "update dept set DEPT_LOC = ? where DEPT_NUM = ? ";
        pstmt = conn.prepareStatement(query); // create a statement
        pstmt.setString(1, "deptLocation"); // set input parameter 1
        pstmt.setInt(2, 1001); // set input parameter 2
        pstmt.executeUpdate(); // execute update statement
    } catch (Exception e) {
        e.printStackTrace();
        System.exit(1);
    } finally {
        pstmt.close();
        conn.close();
    }
}

From source file:ResultSetUpdate.java

public static void main(String args[]) {

    String url;/*  w  ww  .java2 s .  com*/
    url = "jdbc:odbc:UserDB";

    String user, pass;
    user = "ian";
    pass = "stjklsq";

    Connection con;
    Statement stmt;
    ResultSet rs;

    try {
        con = DriverManager.getConnection(url, user, pass);
        stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
        rs = stmt.executeQuery("SELECT * FROM Users where nick=\"ian\"");

        // Get the resultset ready, update the passwd field, commit
        rs.first();
        rs.updateString("password", "unguessable");
        rs.updateRow();

        rs.close();
        stmt.close();
        con.close();
    } catch (SQLException ex) {
        System.err.println("SQLException: " + ex.getMessage());
    }
}

From source file:Example.java

public static void main(String args[]) {
    try {/*from   ww  w .j a  v  a 2  s.  c o m*/
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

        Connection con = DriverManager.getConnection("jdbc:odbc:inventory", "", "");
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM inventory ORDER BY price");

        ResultSetMetaData rsmd = rs.getMetaData();
        int numberOfColumns = rsmd.getColumnCount();
        int rowCount = 1;
        while (rs.next()) {
            for (int i = 1; i <= numberOfColumns; i++) {
                System.out.print(rs.getString(i) + " ");
            }
            rowCount++;
        }
        stmt.close();
        con.close();
    } catch (Exception e) {
        System.out.println(e);
    }
}

From source file:Main.java

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

    stmt.executeUpdate("create table survey (id DECIMAL, name BINARY );");

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

    pstmt.setBigDecimal(1, new BigDecimal("1.00000"));

    // insert the data
    pstmt.executeUpdate();/*from  ww w .ja  va2s.  c  o  m*/

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(rs.getString(1));
    }

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

From source file:DemoPreparedStatementSetDate.java

public static void main(String[] args) throws Exception {
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {/*from  ww w .jav  a2  s  . co  m*/
        conn = getConnection();
        String query = "insert into date_table(id, date_column) values(?, ?)";
        pstmt = conn.prepareStatement(query);
        pstmt.setString(1, "0001");
        java.sql.Date date = getCurrentJavaSqlDate();
        pstmt.setDate(2, date);

        // execute query, and return number of rows created
        int rowCount = pstmt.executeUpdate();
        System.out.println("rowCount=" + rowCount);
    } finally {
        pstmt.close();
        conn.close();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement();
    // st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    st = conn.createStatement();/*from   ww  w  .ja va 2s  .co m*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    ResultSetMetaData rsMetaData = rs.getMetaData();

    int numberOfColumns = rsMetaData.getColumnCount();
    System.out.println("resultSet MetaData column Count=" + numberOfColumns);

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