Example usage for java.sql ResultSet next

List of usage examples for java.sql ResultSet next

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Introduction

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

Prototype

boolean next() throws SQLException;

Source Link

Document

Moves the cursor forward one row from its current position.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    String hostname = "", dbname = "", username = "", password = "";
    Class.forName("org.postgresql.Driver");
    Connection connection = DriverManager.getConnection("jdbc:postgresql://" + hostname + "/" + dbname,
            username, password);// w  w w . ja v  a2  s. co  m
    ResultSet rs = connection.createStatement().executeQuery("select version() as version");
    while (rs.next()) {
        System.out.println(rs.getString("version"));
    }
}

From source file:Main.java

License:asdf

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

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

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

    pstmt.setBytes(1, "asdfasdf".getBytes());
    pstmt.executeUpdate();/*from   w  ww.  j av a 2 s .c  o  m*/

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.println(rs.getBytes(2));
    }

    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   ww w .  j a v  a 2s . com*/
    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:ChainedExceptionDemo.java

public static void main(String[] args) {
    String driver = "com.mysql.jdbc.Driver";
    String connectionURL = "jdbc:mysql://127.0.0.1:3306/sample";
    try {//  w  ww  . ja  v a 2  s. c  om
        Class.forName(driver);
    } catch (java.lang.ClassNotFoundException e) {
        e.printStackTrace();
    }
    try {
        conn = DriverManager.getConnection(connectionURL);
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM NONEXISTINGTABLE");
        rs.next();
        rs.close();
    } catch (SQLException sx) {
        for (Throwable e : sx) {
            System.err.println("Error encountered: " + e);
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName(DRIVER);//from www.  j  a  va2 s  .c  o m
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    DatabaseMetaData metadata = connection.getMetaData();
    ResultSet resultSet = metadata.getColumns(null, null, "users", null);
    while (resultSet.next()) {
        String name = resultSet.getString("COLUMN_NAME");
        String type = resultSet.getString("TYPE_NAME");
        int size = resultSet.getInt("COLUMN_SIZE");

        System.out.println("Column name: [" + name + "]; type: [" + type + "]; size: [" + size + "]");
    }
    connection.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    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')");

    DatabaseMetaData meta = conn.getMetaData();
    ResultSet schemas = meta.getSchemas();
    while (schemas.next()) {
        String tableSchema = schemas.getString(1); // "TABLE_SCHEM"
        String tableCatalog = schemas.getString(2); //"TABLE_CATALOG"
        System.out.println("tableSchema" + tableSchema);
    }//from   www . ja v a 2 s. c o m

    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, id2 tinyint, id3 smallint, id4 bigint, id5 real);");
    String sql = "INSERT INTO survey (id2,id3,id4,id5) VALUES(?,?,?,?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);
    byte b = 1;//from   w  w  w .ja va 2 s.c om
    short s = 2;
    pstmt.setByte(1, b);
    pstmt.setShort(2, s);
    pstmt.setInt(3, 3);
    pstmt.setLong(4, 4L);
    pstmt.executeUpdate();

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.println(rs.getString(2));
    }
    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(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   ww  w.  java2s  .  co m
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    while (rs.next()) {
        int id = rs.getInt(1); // index 1 is the "id" column
        String name = rs.getString(2); // index 2 is the "name" column
        System.out.println(id);
        System.out.println(name);
    }

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

}

From source file:com.alibaba.cobar.manager.test.ConnectionTest.java

/**
 * @param args/*from   w  w  w  .  jav  a2  s  .  c  o m*/
 */
public static void main(String[] args) {
    try {
        BasicDataSource ds = new BasicDataSource();
        ds.setUsername("test");
        ds.setPassword("");
        ds.setUrl("jdbc:mysql://10.20.153.178:9066/");
        ds.setDriverClassName("com.mysql.jdbc.Driver");
        ds.setMaxActive(-1);
        ds.setMinIdle(0);
        ds.setTimeBetweenEvictionRunsMillis(600000);
        ds.setNumTestsPerEvictionRun(Integer.MAX_VALUE);
        ds.setMinEvictableIdleTimeMillis(GenericObjectPool.DEFAULT_MIN_EVICTABLE_IDLE_TIME_MILLIS);
        Connection conn = ds.getConnection();

        Statement stm = conn.createStatement();
        stm.execute("show @@version");

        ResultSet rst = stm.getResultSet();
        rst.next();
        String version = rst.getString("VERSION");

        System.out.println(version);

    } catch (Exception exception) {
        System.out.println("10.20.153.178:9066   " + exception.getMessage() + exception);
    }
}

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, register int );");

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

    pstmt.setBoolean(1, true);/*w w w  .  jav a2s . c om*/
    pstmt.executeUpdate();

    pstmt.setBoolean(1, false);
    pstmt.executeUpdate();

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.println(rs.getString(2));
    }
    rs.close();
    stmt.close();
    conn.close();
}