How do you create a ResultSet in Java?

How do you create a ResultSet in Java?

Example of Scrollable ResultSet

  1. import java.sql.*;
  2. class FetchRecord{
  3. public static void main(String args[])throws Exception{
  4. Class.forName(“oracle.jdbc.driver.OracleDriver”);
  5. Connection con=DriverManager.getConnection(“jdbc:oracle:thin:@localhost:1521:xe”,”system”,”oracle”);

What are the different types of ResultSet?

There are two types of result sets namely, forward only and, bidirectional. Forward only ResultSet: The ResultSet object whose cursor moves only in one direction is known as forward only ResultSet. By default, JDBC result sets are forward-only result sets.

What is ResultSet in JDBC?

A ResultSet object maintains a cursor that points to the current row in the result set. The term “result set” refers to the row and column data contained in a ResultSet object. The methods of the ResultSet interface can be broken down into three categories − Navigational methods − Used to move the cursor around.

How do you get ResultSet?

executeQuery method to obtain the result table from the SELECT statement in a ResultSet object. In a loop, position the cursor using the next method, and retrieve data from each column of the current row of the ResultSet object using getXXX methods. XXX represents a data type. Invoke the ResultSet.

What is result in Java?

A ResultSet is a Java object that contains the results of executing an SQL query. In other words, it contains the rows that satisfy the conditions of the query. The data stored in a ResultSet object is retrieved through a set of get methods that allows access to the various columns of the current row.

What is ResultSet next?

The next() method of the ResultSet interface moves the pointer of the current (ResultSet) object to the next row, from the current position. Statement stmt = con. createStatement(); ResultSet rs = stmt.

What is a ResultSet in Java?

A table of data representing a database result set, which is usually generated by executing a statement that queries the database. A ResultSet object maintains a cursor pointing to its current row of data. Initially the cursor is positioned before the first row.

What is ResultSet in advanced Java?

A ResultSet is a Java object that contains the results of executing an SQL query. In other words, it contains the rows that satisfy the conditions of the query. The data stored in a ResultSet object is retrieved through a set of get methods that allows access to the various columns of the current row. The ResultSet.

What is ResultSet briefly explain?

A ResultSet object is a table of data representing a database result set, which is usually generated by executing a statement that queries the database. For example, the CoffeeTables. viewTable method creates a ResultSet , rs , when it executes the query through the Statement object, stmt .

What are the JDBC API components?

JDBC has four major components that are used for the interaction with the database.

  • JDBC API.
  • JDBC Test Suite.
  • JDBC Driver Manger.
  • JDBC ODBC Bridge Driver.

What is Monad in Java?

What is a monad? Technically, a monad is a parameterised type such as Optional and Stream in Java which: Implements flatMap (a.k.a. bind) and unit (a.k.a. identity, return, Optional. of(), etc…). Follows three laws: Left identity, Right identity and associativity, which are out of the scope of this post[1].

Which method is used to retrieve the ResultSet created?

The ResultSet interface declares getter methods (for example, getBoolean and getLong ) for retrieving column values from the current row. You can retrieve values using either the index number of the column or the alias or name of the column.

What is resultset interface in Java?

ResultSet interface. The object of ResultSet maintains a cursor pointing to a row of a table. Initially, cursor points to before the first row.

How do I iterate through a resultset in Java?

The method ResultSet.next moves the cursor to the next row. This method returns false if the cursor is positioned after the last row. This method repeatedly calls the ResultSet.next method with a while loop to iterate through all the data in the ResultSet.

How do I access the data in a resultset object?

You access the data in a ResultSet object through a cursor. Note that this cursor is not a database cursor. This cursor is a pointer that points to one row of data in the ResultSet. Initially, the cursor is positioned before the first row. The method ResultSet.next moves the cursor to the next row.

How do you use resultset in a while loop?

A ResultSet object maintains a cursor pointing to its current row of data. Initially the cursor is positioned before the first row. The next method moves the cursor to the next row, and because it returns false when there are no more rows in the ResultSet object, it can be used in a while loop to iterate through the result set.