I have legacy source which uses new FtpClient(), and found that FtpClient is a abstract class in jre1.7. The code is fine for jre1.6 or before.
I am using maven to build my project now. My JAVA_HOME points to jdk1.7, which cause the compilation of my source failure. But it is fine when my JAVA_HOME point to jdk1.6. However, the jdk versioin in my company is 1.7 default, and would not downgrade to version 1.6.
Question: how to make it work to compile my source without change the JAVA_HOME?
Below the concerned build log:
[INFO] Compiling 601 source files to C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\target\classes
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:[44,9] error: FtpClient is abstract; cannot be instantiated
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:[45,6] error: cannot find symbol
could not parse error message: symbol: method openServer(String)
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:46: error: no suitable method found for login(String,String)
aftp.login(user,psw);
^
could not parse error message: method FtpClient.login(String,char[],String) is not applicable
(actual and formal argument lists differ in length)
method FtpClient.login(String,char[]) is not applicable
(actual argument String cannot be converted to char[] by method invocation conversion)
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:47: error: cannot find symbol
aftp.ascii();
^
could not parse error message: symbol: method ascii()
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:53: error: FtpClient is abstract; cannot be instantiated
aftp = new FtpClient();
^
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:[54,6] error: cannot find symbol
could not parse error message: symbol: method openServer(String,int)
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:55: error: no suitable method found for login(String,String)
aftp.login(user,psw);
^
could not parse error message: method FtpClient.login(String,char[],String) is not applicable
(actual and formal argument lists differ in length)
method FtpClient.login(String,char[]) is not applicable
(actual argument String cannot be converted to char[] by method invocation conversion)
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:56: error: cannot find symbol
aftp.binary();
^
could not parse error message: symbol: method binary()
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:62: error: cannot find symbol
aftp.closeServer();
^
could not parse error message: symbol: method closeServer()
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:127: error: cannot find symbol
aftp.cd(RWFileDir);
^
could not parse error message: symbol: method cd(String)
location: variable aftp of type FtpClient
C:\MyData\Project\A-Trunk\CCA\Online\branches\CCA_TabletAccess_Maven\Common_Source\src\com\hhbb\cca\services\ens\util\FTPCommon.java:128: error: cannot find symbol
TelnetOutputStream outs = aftp.put(filename);
^
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8 seconds
[INFO] Finished at: Thu Mar 24 14:12:52 CST 2016