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我檢查了ojdbc6.jar下的META-INF/MANIFEST.MF文件,結果如下。ojdbc6.jar的主類清單信息
Manifest-Version: 1.0
Implementation-Vendor: Oracle Corporation
Implementation-Title: ojdbc6.jar
Implementation-Version: Oracle JDBC Driver version - "11.1.0.7.0-Produ
ction"
Implementation-Time: Wed Sep 10 15:03:50 2008
Specification-Vendor: Oracle Corporation
Sealed: true
Created-By: 1.6.0 (Sun Microsystems Inc.)
Specification-Title: Oracle JDBC driver classes for use with JDK6
Specification-Version: Oracle JDBC Driver version - "11.1.0.7.0-Produc
tion"
Main-Class: oracle.jdbc.OracleDriver
Name: oracle/sql/converter_xcharset/
Sealed: false
Name: oracle/sql/
Sealed: false
Name: oracle/sql/converter/
Sealed: false
在這些清單信息中,行Main-Class: oracle.jdbc.OracleDriver
引起了我的注意。我瞭解Main-Class
屬性的概念。但我不確定爲什麼這個班必須是主班。