Web Reference: You avoid null checks by not returning null in the first place — use Optional or default (null-object) values instead. If something must never be null, validate it once at the start using Objects.requireNonNull (). Feb 20, 2026 · Learn several strategies for avoiding the all-too-familiar boilerplate conditional statements to check for null values in Java. Aug 6, 2025 · In Java, a special null value can be assigned to an object reference. NullPointerException is thrown when program attempts to use an object reference that has the null value.
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