我最近升级到Ubuntu 12.04LTS并安装Tomcat 7但出现以下错误:
root@me:/# sudo apt-get install tomcat7 tomcat7-docs tomcat7-examples tomcat7-admin -y
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet …我想创建一个整数或数字,其中包含数字或字符串数组中的所有数字.我怎样才能做到这一点？
例如:
digitArry = [9', '8', '7', '4', '5', '6'];
应该成为
integer = 987456;
我们能改变主线程的名称吗？并在主要方法
Thread t = Thread.currentThread();
System.out.println(t);
它打印:
Thread[main,5,main]
- 这里是第一个线程名称,第二个优先级,第三个是当前线程所属的线程组.
这样对吗？
什么是线程组第三个参数？