What is a ResultSet in Java?

What is a ResultSet 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 in Java with example?

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 does ResultSet return in Java?

Return value This method returns a boolean value specifying whether the ResultSet object contains more rows. If there are no rows next to its current position this method returns false, else it returns true. Using this method in the while loop you can iterate the contents of the result set.

What is the meaning of ResultSet?

An SQL result set is a set of rows from a database, as well as metadata about the query such as the column names, and the types and sizes of each column. Depending on the database system, the number of rows in the result set may or may not be known.

What are the types of ResultSet?

There are 3 basic types of ResultSet.

• Forward-only. As name suggest, this type can only move forward and are non-scrollable.
• Scroll-insensitive. This type is scrollable which means the cursor can move in any direction.
• Scroll-sensitive.
• Forward-only.
• Scroll-insensitive.
• Scroll-sensitive.

What is JDBC ResultSet?

The Java JDBC ResultSet interface represents the result of a database query. The text about queries shows how the result of a query is returned as a java. sql. ResultSet .

What are types of ResultSet?

Why do we use ResultSet?

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. Update methods − Used to update the data in the columns of the current row. The updates can then be updated in the underlying database as well.

What is ResultSet next?

Interface ResultSet. 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. A default ResultSet object is not updatable and has a cursor that moves forward only.

How do you create a ResultSet object in Java?

JDBC ResultSet and Generic Class List Using Java Reflection Annotations

1. Create a custom annotation.
2. Create a Model class, which contains mapping fields to the ResultSet column names with the created annotation.
3. Call the ResultSet.
4. Load the ResultSet for each value into the object.
5. Check for the Primitive type.

What are the types of ResultSet in Java?

What are the types of ResultSet in JDBC?