.

src/main/java/net/tccn/dbq/jdbc/api/DbKit.java

@@ -34,24 +34,4 @@ public class DbKit implements DbSource{
     public <T> T queryColumn(String sql, Class<T> type) {
         return dbSource.queryColumn(sql, type);
     }
-
-    @Override
-    public <T> T queryInt(String sql) {
-        return null;
-    }
-
-    @Override
-    public <T> T queryLong(String sql) {
-        return null;
-    }
-
-    @Override
-    public <T> T queryDouble(String sql) {
-        return null;
-    }
-
-    @Override
-    public <T> T queryDate(String sql) {
-        return null;
-    }
 }