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StringBuffer str = new StringBuffer("select * from menu where parentid=1 and mid <>1 order by parentid");

List list = new ArrayList();
ResultSet rst = null;
DataBaseConnection dbc = null;
PreparedStatement pstm = null;

try {
dbc = new DataBaseConnection();
pstm = dbc.getConnection().prepareStatement(str.toString());

rst = dbc.query(pstm);

while(rst.next()){
System.out.println(rst.getString("name"));
}


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try {
dbc = new DataBaseConnection();
pstm = dbc.getConnection().prepareStatement(str.toString());
rst = pstm.executeQuery();
while(rst.next()){
System.out.println(rst.getString("name"));
}

public ResultSet query(PreparedStatement pstm) throws SQLException,
Exception {

this.rst = pstm.executeQuery();
return rst;
}

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Exception {
    return pstm.executeQuery();
}

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