C++ introduced the concept of a constructor, a special method automatically called when an objects is created. Java also adopted the constructor, an in additon has a garbage collector that automatically releases memory resources when they're no longer being used. Guaranteed initialization with the constructor In Java, the class designer can guarantee initialization of ...

when i use a client to run a programme, it has the error message: waiting for ipc:0 initialization failed. is there anyone who can tell me how to initialize the ipc services. or there is other possilbe reason which may result in the ipc intialization fail. it is known that the ipc service on the server is normal, cause i use another client to run the same programme successfully. //sorry, i can'...

请教怎么解决这个问题，谢谢了！！！

db2 insert into DATACORE.ETL_LOGGER values (9999999,'20090411M_SV_ACCM_TIME_PROC','2009-04-11 10:0:55','2009-04-11 10:13:59','ok','M_SV_ACCM_TIME_PROC-success ','M_SV_ACCM_TIME_PROC_D','2009-04-11'); -bash: syntax error near unexpected token `(' 系统是cent linux ,数据库是db2 9 为什么会报这样的错误呢?~

一个简单的c文件hello.c如下： #include int main(void) { printf("Hello, world!\n"); return 0; } 按照示例写的相应的makefile如下: hello:hello.o cc -o hello hello.o hello.o:hello.c stdio.h cc -c hello.c clean: rm hello hello.o make的时候，提示错误 make: No targets provided near line 2 这是什么问题？错在哪里呢?

刚才重写 printf 运行正常，但是编译给出一个警告 [code]LTIO.c:10: warning: initialization discards qualifiers from pointer target type[/code] 这一行代码如下 [code]void * c = str;[/code] 其中str为 [code]const void* str；[/code]

initialization parameters are used to make configuration options available to a servlet. This allows the developer to declaratively affect the runtime environment of the servlet. initialization parameters are configured within the servlet element using init-param elements, as shown in the following web.xml fragment: storefront org.apache.struts.action.ActionServlet config /WEB-INF/st...

oracle 8.1.7 环境为win2000 server 改机器安装有2个数据库，一个A,一个是B，现在数据库a正常，但是数据库B，连接的时候出现ORA-01033:ORACLE initialization or shutdown in progress， 尝试用sqlplus/nolog----sql>;connect internal/oracle@b as sysdba,但是提示ora-01017:invalid usernam/passwor 2、如果用connect system/manager◎B，提示ORA-01033:ORACLE initialization or shutdown in progress 3、请问如何解决！

联接数据库时这样提示。昨天还好好的。怎么办啊。