java.lang.NullPointerException

Stack Overflow | Michael Brauer | 7 months ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at Student.<init>()
  2. Unknown
    Roster.<init>
    1. Student.<init>(Student.java:22)
    2. Roster.<init>(Roster.java:35)
    2 frames