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getMetaData() - Method in interface java.sql.Connection 
Retrieves a DatabaseMetaData object that contains metadata about the 
database to which this Connection object represents a connection. 

getMetaData() - Method in interface java.sql.PreparedStatement 
Retrieves a ResultSetMetaData object that contains information about the col
umns of the ResultSet object that will be returned when this PreparedStateme
nt object is executed. 

getMetaData() - Method in interface java.sql.ResultSet 
Retrieves the number, types and properties of this ResultSet object's column
s. 

getMetadata() - Method in class javax.imageio.IIOImage 
Returns a reference to the current IIOMetadata object, or null is none is se
t
//http://java.sun.com/j2se/1.4.2/docs/api/

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:    public void executeQuery(String query) {
:         if (connection == null || statement == null) {
:             System.err.println("There is no database to execute the query.")
: ;
:             return;
:         }
:         try {
:                         byte[] b1= query.getBytes();
:                         query=new String(b1,"cp437");
: .................������ʡ�ԣ�

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