Example usage for java.sql ResultSet close

Introduction

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

Prototype

void close() throws SQLException;

Source Link

Document

Releases this ResultSet 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 = getHSQLConnection();

    conn.setAutoCommit(true);/*w  w w.  j  a v a  2  s  . co  m*/

    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

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

    ResultSetMetaData rsMetaData = rs.getMetaData();

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

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

From source file:JavaDBDemo.java

public static void main(String[] args) {
    String driver = "org.apache.derby.jdbc.EmbeddedDriver";
    String connectionURL = "jdbc:derby:myDatabase;create=true";
    String createString = "CREATE TABLE Employee (NAME VARCHAR(32) NOT NULL, ADDRESS VARCHAR(50) NOT NULL)";
    try {// w ww .j  a  v  a2s .  c o m
        Class.forName(driver);
    } catch (java.lang.ClassNotFoundException e) {
        e.printStackTrace();
    }
    try {
        conn = DriverManager.getConnection(connectionURL);
        Statement stmt = conn.createStatement();
        stmt.executeUpdate(createString);

        PreparedStatement psInsert = conn.prepareStatement("insert into Employee values (?,?)");

        psInsert.setString(1, args[0]);
        psInsert.setString(2, args[1]);

        psInsert.executeUpdate();

        Statement stmt2 = conn.createStatement();
        ResultSet rs = stmt2.executeQuery("select * from Employee");
        int num = 0;
        while (rs.next()) {
            System.out.println(++num + ": Name: " + rs.getString(1) + "\n Address" + rs.getString(2));
        }
        rs.close();
    } catch (Exception 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 TIMESTAMP );");

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

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    pstmt.executeUpdate();/*from  ww  w  .j  a v  a  2 s  . co m*/

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

    pstmt.setString(1, "2");
    pstmt.executeUpdate();

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

    rs.close();
    st.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("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    st = conn.createStatement();/*  w ww  .  j av  a  2  s  . c  o  m*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    rs = st.executeQuery("SELECT COUNT(*) FROM survey");
    // get the number of rows from the result set
    rs.next();
    int rowCount = rs.getInt(1);
    System.out.println(rowCount);

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

}

From source file:Main.java

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

    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    st = conn.createStatement();/*from   www  .j  av  a2  s.c om*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    rs = st.executeQuery("SELECT COUNT(*) FROM survey");
    // get the number of rows from the result set
    rs.next();
    int rowCount = rs.getInt(1);
    System.out.println(rowCount);

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

}

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 int, name CHAR(5) );");

    stmt.executeUpdate("INSERT INTO survey(id, name)VALUES(111, '123456789')");

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    outputResultSet(rs);/* w w w . java2s.c  om*/

    stmt.executeUpdate("update survey set name='newName' where id = 111");

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

    rs.close();
    stmt.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("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (10,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (null,null)");
    st = conn.createStatement();/*from www  .j  a  v  a 2  s.  c  o m*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    while (rs.next()) {
        int id = rs.getInt(1);
        System.out.println(id);
        if (rs.wasNull()) {
            id = -1;
        }
        System.out.println(id);
    }
    rs.close();
    st.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection con = DriverManager.getConnection("jdbc:h2:mem:");
    Statement s = con.createStatement();
    s.execute("CREATE TABLE Table1 (Column1 CLOB)");

    InputStream is = new FileInputStream("data.txt");
    Reader rdr = new InputStreamReader(is, StandardCharsets.ISO_8859_1);
    PreparedStatement ps = con.prepareStatement("INSERT INTO Table1 (Column1) VALUES (?)");
    ps.setCharacterStream(1, rdr);//from  w ww  .  j  a va2  s  .  co m
    ps.executeUpdate();

    ResultSet rs = s.executeQuery("SELECT Column1 FROM Table1");
    int rowNumber = 0;
    while (rs.next()) {
        String str = rs.getString("Column1");
        System.out.println(String.format("Row %d: CLOB is %d character(s) long.", ++rowNumber, str.length()));
    }
    rs.close();
    con.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Statement stmt = DriverManager.getConnection("jdbc:odbc:employee").createStatement();
    ResultSet rs = stmt.executeQuery("select lastname, firstname, id from [Sheet1$]");
    while (rs.next()) {
        String lname = rs.getString(1);
        String fname = rs.getString(2);
        int id = rs.getInt(3);
        System.out.println(fname + " " + lname + "  id : " + id);
    }//ww w.  j  ava2  s.  c o  m
    rs.close();
    stmt.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection dbConnection = null;
    String myConnectionString = "";
    myConnectionString = "jdbc:mysql://192.168.1.3:3306/mytestdb";
    dbConnection = DriverManager.getConnection(myConnectionString, "root", "whatever");
    PreparedStatement stmt = dbConnection.prepareStatement("SELECT * FROM jdbctest");
    ResultSet rs = stmt.executeQuery();
    int i = 0;//from   w  ww. j a  va2 s  .c om
    int j = 0;
    String s = "";
    while (rs.next()) {
        i++;
        j = rs.getInt("id");
        s = rs.getString("textcol");
    }
    System.out.println(String.format("Finished reading %d rows.", i));
    rs.close();
    stmt.close();
    dbConnection.close();
}