题目大概这样：
public class z
{
public static void main(String argv[])
{
new z();
}

public z()
{
z alias1=this;
z alias2=this;
try
{
synchronized(alias1)
{
wait(alias2);
System.out.println("waiting done");
}
}
catch (InterruptedException e)
{
System.out.println("Interrupted Exception");
}
catch (Exception e)
{
System.out.println("Exception");
}
System.out.println("all done");
}
}
问执行结果。
但我编译时报告wait语法错误，另外，请问synchronized是哪个package里