Eclipse 将行标记为死代码
我有这个函数，其中有一些死代码，由 Eclipse 标记。
我有两行检查 a & b.检查 b 的行被标记为空。
public int[] runThis(List<Integer> buildIds, List<Integer> scenarios, boolean oflag) {
int rating[] = new int[scenarios.size()];
if(buildIds == null) {
System.out.println("ERROR - Building ID list is null!");
return null;
}
if(scenarios == null) {
System.out.println("ERROR - Scenario list is null!"); //dead
return null; //dead
}
return rating;
}
为什么 Ellipse 使两条线成为死线？有什么帮助吗？非常感谢您抽出时间。
I have this function with some dead code, marked by Eclipse.
I have two lines that check a & b. Lines that check b are marked as null.
public int[] runThis(List<Integer> buildIds, List<Integer> scenarios, boolean oflag) {
int rating[] = new int[scenarios.size()];
if(buildIds == null) {
System.out.println("ERROR - Building ID list is null!");
return null;
}
if(scenarios == null) {
System.out.println("ERROR - Scenario list is null!"); //dead
return null; //dead
}
return rating;
}
Why does Ellipse make the two lines as dead? Any help? Thanks very much for your time.
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评论（1）
因为您已经在数组构造函数中调用了
scenarios.size()。这保证了scenarios不为 null，否则此时它将引发异常。Because you've already called
scenarios.size()in your array constructor. This guaranteesscenariosisn't null or it will have thrown an exception by that point.