如果finally块中有return语句的话，它将覆盖掉函数中其他return语句。
public
class
Demo{
public
static
void
main(String args[]){
int
num = 10;
System.out.println(test(num));
}
public
static
int
test(
int
b){
try
{
b += 10;
return
b;
}
catch
(RuntimeException e)
{
}
catch
(Exception e2)
{
}
finally
{
b += 10;
return
b;
}
}
}
返回30