Uses of Interface java.sql.Blob (Java Platform SE 8 )
Date: 2026-07-22

## Uses of Interface
java.sql.Blob

- Packages that use Blob
  Package | Description
  --- | ---
  java.sql | Provides the API for accessing and processing data stored in a data source (usually a relational database) using the JavaTM programming language.
  javax.sql | Provides the API for server side data source access and processing from the JavaTM programming language.
  javax.sql.rowset | Standard interfaces and base classes for JDBC `RowSet` implementations.
  javax.sql.rowset.serial | Provides utility classes to allow serializable mappings between SQL types and data types in the Java programming language.

- - ### Uses of Blob in java.sql

    Methods in java.sql that return Blob
    Modifier and Type | Method and Description
    --- | ---
    `Blob` | Connection.`createBlob()` Constructs an object that implements the `Blob` interface.
    `Blob` | ResultSet.`getBlob(int columnIndex)` Retrieves the value of the designated column in the current row of this `ResultSet` object as a `Blob` object in the Java programming language.
    `Blob` | CallableStatement.`getBlob(int parameterIndex)` Retrieves the value of the designated JDBC `BLOB` parameter as a `Blob` object in the Java programming language.
    `Blob` | ResultSet.`getBlob(String columnLabel)` Retrieves the value of the designated column in the current row of this `ResultSet` object as a `Blob` object in the Java programming language.
    `Blob` | CallableStatement.`getBlob(String parameterName)` Retrieves the value of a JDBC `BLOB` parameter as a `Blob` object in the Java programming language.
    `Blob` | SQLInput.`readBlob()` Reads an SQL `BLOB` value from the stream and returns it as a `Blob` object in the Java programming language.

    Methods in java.sql with parameters of type Blob
    Modifier and Type | Method and Description
    --- | ---
    `long` | Blob.`position(Blob pattern, long start)` Retrieves the byte position in the `BLOB` value designated by this `Blob` object at which `pattern` begins.
    `void` | PreparedStatement.`setBlob(int parameterIndex, Blob x)` Sets the designated parameter to the given `java.sql.Blob` object.
    `void` | CallableStatement.`setBlob(String parameterName, Blob x)` Sets the designated parameter to the given `java.sql.Blob` object.
    `void` | ResultSet.`updateBlob(int columnIndex, Blob x)` Updates the designated column with a `java.sql.Blob` value.
    `void` | ResultSet.`updateBlob(String columnLabel, Blob x)` Updates the designated column with a `java.sql.Blob` value.
    `void` | SQLOutput.`writeBlob(Blob x)` Writes an SQL `BLOB` value to the stream.

  - ### Uses of Blob in javax.sql

    Methods in javax.sql with parameters of type Blob
    Modifier and Type | Method and Description
    --- | ---
    `void` | RowSet.`setBlob(int i, Blob x)` Sets the designated parameter in this `RowSet` object's command with the given `Blob` value.
    `void` | RowSet.`setBlob(String parameterName, Blob x)` Sets the designated parameter to the given `java.sql.Blob` object.

  - ### Uses of Blob in javax.sql.rowset

    Methods in javax.sql.rowset with parameters of type Blob
    Modifier and Type | Method and Description
    --- | ---
    `void` | BaseRowSet.`setBlob(int parameterIndex, Blob x)` Sets the designated parameter to the given `Blob` object in the Java programming language.
    `void` | BaseRowSet.`setBlob(String parameterName, Blob x)` Sets the designated parameter to the given `java.sql.Blob` object.

  - ### Uses of Blob in javax.sql.rowset.serial

    Classes in javax.sql.rowset.serial that implement Blob
    Modifier and Type | Class and Description
    --- | ---
    `class` | `SerialBlob` A serialized mapping in the Java programming language of an SQL `BLOB` value.

    Methods in javax.sql.rowset.serial that return Blob
    Modifier and Type | Method and Description
    --- | ---
    `Blob` | SQLInputImpl.`readBlob()` Retrieves the `BLOB` value at the head of this `SQLInputImpl` object as a `Blob` object in the Java programming language.

    Methods in javax.sql.rowset.serial with parameters of type Blob
    Modifier and Type | Method and Description
    --- | ---
    `long` | SerialBlob.`position(Blob pattern, long start)` Returns the position in this `SerialBlob` object where the given `Blob` object begins, starting the search at the specified position.
    `void` | SQLOutputImpl.`writeBlob(Blob x)` Writes a `Blob` object in the Java programming language to this `SQLOutputImpl` object.

    Constructors in javax.sql.rowset.serial with parameters of type Blob
    Constructor and Description
    `SerialBlob(Blob blob)` Constructs a `SerialBlob` object that is a serialized version of the given `Blob` object.

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