Java updating resultset updating windows xp professional

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The first thing we need for our Java UPDATE example is a sample My SQL database table.

To keep it simple — but also show several different data types — I've created the following My SQL database table: create table users ( id int unsigned auto_increment not null, first_name varchar(32) not null, last_name varchar(32) not null, date_created timestamp default now(), is_admin boolean, num_points int, primary key (id) ); -- insert some sample records insert into users (first_name, last_name) values ('Fred', 'Flinstone'); insert into users (first_name, last_name) values ('Barney', 'Rubble'); A few of these fields are a little contrived, but I wanted to show several different data types in one table, so this is what I came up with.

A default Result Set object is not updatable and has a cursor that moves forward only.

Thus, you can iterate through it only once and only from the first row to the last row.

Copy and past the following example in JDBCExample.java, compile and run as follows − java JDBCExample Connecting to database... ID: 100, Age: 38, First: Zara, Last: Ali ID: 101, Age: 45, First: Mahnaz, Last: Fatma ID: 102, Age: 55, First: Zaid, Last: Khan ID: 103, Age: 50, First: Sumit, Last: Mittal Inserting a new record... ID: 100, Age: 38, First: Zara, Last: Ali ID: 101, Age: 45, First: Mahnaz, Last: Fatma ID: 102, Age: 55, First: Zaid, Last: Khan ID: 103, Age: 50, First: Sumit, Last: Mittal ID: 104, Age: 40, First: John, Last: Paul List the record before deleting...

ID: 101, Age: 45, First: Mahnaz, Last: Fatma List result set after deleting one records...

When a getter method is called with a string and more than one column has the same alias or name as the string, the value of the first matching column is returned.

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IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.* * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for * inventing predecessor languages C and C is also gratefully acknowledged.I want to chang all thd "id"'s values to int k, using Results Set. I get the error at the update Int("ID",k); Error: "Cannot suppress a null exception.) for retrieving column values from the current row. For maximum portability, result set columns within each row should be read in left-to-right order, and each column should be read only once.You can retrieve values using either the index number of the column or the alias or name of the column. For example, the following method, Strings used as input to getter methods are case-insensitive.

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