thank you.
Loading oracle JDBC Driver
Connecting to local database
java.lang.NullPointerException
at oracle.jdbc.ttc7.TTCOutBuffer.add(TTCOutBuffer.java:129)
at oracle.jdbc.ttc7.TTIMsg.marshalUB1(TTIMsg.java:372)
at oracle.jdbc.ttc7.TTIpro.marshal(TTIpro.java:234)
at oracle.jdbc.ttc7.TTIpro.<init>(TTIpro.java:96)
at oracle.jdbc.ttc7.TTC7Protocol.connect(TTC7Protocol.java:1000)
at oracle.jdbc.ttc7.TTC7Protocol.logon(TTC7Protocol.java:158)
at oracle.jdbc.driver.OracleConnection.<init>(OracleConnection.java:93)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:147)
at java.sql.DriverManager.getConnection(DriverManager.java:91)
at java.sql.DriverManager.getConnection(DriverManager.java:134)
at test.main(test.java:27)