ResultSetMetaData

I was looking for a way to determine the number of columns in a ResultSet object when I encountered ResultSetMetaData. With this class I only need to call on the getColumnCount() method

String	getCatalogName(int column)	Gets the designated column's table's catalog name.
String	getColumnClassName(int column)	Returns the fully-qualified name of the Java class whose instances are manufactured if the method ResultSet.getObject is called to retrieve a value from the column.
int	getColumnCount()	Returns the number of columns in this ResultSet object.
int	getColumnDisplaySize(int column)	Indicates the designated column's normal maximum width in characters.
String	getColumnLabel(int column)	Gets the designated column's suggested title for use in printouts and displays.
String	getColumnName(int column)	Get the designated column's name.
int	getColumnType(int column)	Retrieves the designated column's SQL type.
String	getColumnTypeName(int column)	Retrieves the designated column's database-specific type name.
int	getPrecision(int column)	Get the designated column's number of decimal digits.
int	getScale(int column)	Gets the designated column's number of digits to right of the decimal point.
String	getSchemaName(int column)	Get the designated column's table's schema.
String	getTableName(int column)	Gets the designated column's table name.
boolean	isAutoIncrement(int column)	Indicates whether the designated column is automatically numbered, thus read-only.
boolean	isCaseSensitive(int column)	Indicates whether a column's case matters.
boolean	isCurrency(int column)	Indicates whether the designated column is a cash value.
boolean	isDefinitelyWritable(int column)	Indicates whether a write on the designated column will definitely succeed.
int	isNullable(int column)	Indicates the nullability of values in the designated column.
boolean	isReadOnly(int column)	Indicates whether the designated column is definitely not writable.
boolean	isSearchable(int column)	Indicates whether the designated column can be used in a where clause.
boolean	isSigned(int column)	Indicates whether values in the designated column are signed numbers.
boolean	isWritable(int column)	Indicates whether it is possible for a write on the designated column to succeed.