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Add nullability contract to PasswordEncoder#encode #18334

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Merged
rwinch merged 2 commits into from
Jan 12, 2026
Merged

Add nullability contract to PasswordEncoder#encode #18334

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d526a24
Add nullability contract to `PasswordEncoder#encode`
scordio Dec 18, 2025
faba8b8
Fix checkstyle
rwinch Jan 12, 2026
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3 changes: 3 additions & 0 deletions crypto/src/main/java/org/springframework/security/crypto/password/PasswordEncoder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@

import org.jspecify.annotations.Nullable;

import org.springframework.lang.Contract;

/**
* Service interface for encoding passwords.
*
Expand All @@ -36,6 +38,7 @@ public interface PasswordEncoder {
* @return A non-null encoded password, unless the rawPassword was null in which case
* the result must be null.
*/
@Contract("null -> null; !null -> !null")
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@Nullable String encode(@Nullable CharSequence rawPassword);

/**
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