Exception in thread "main" java.lang.NullPointerException at test.AdjMGraph.InitateAaj(AdjMGraph.jav

Exception in thread "main" java.lang.NullPointerException at test.AdjMGraph.InitateAaj(AdjMGraph.java:48


at test.AdjMGraph.InitateAaj(AdjMGraph.java:48)
at test.Main.main(Main.java:10))

Exception in thread "main" java.lang.NullPointerException at test.AdjMGraph.InitateAaj(AdjMGraph.jav
Exception in thread "main" java.lang.NullPointerException at test.AdjMGraph.InitateAaj(AdjMGraph.jav

出错的原因原来是定义数组后没有对每个数组对象进行实例化,数组中的每个元素都是一个对象啊,既然是对象我们没有对他进行分配空间(没有new)又怎么去使用呢
Exception in thread "main" java.lang.NullPointerException at test.AdjMGraph.InitateAaj(AdjMGraph.jav
实例化对象后问题解决