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'Serializable' object implicitly stores non-'Serializable' object

Reports any references to local non-Serializable variables outside Serializable lambdas, local and anonymous classes.

When a local variable is referenced from an anonymous class, its value is stored in an implicit field of that class. The same happens for local classes and lambdas. If the variable is of a non-Serializable type, serialization will fail.

Example:

interface A extends Serializable { abstract void foo(); } class B {} class C { void foo() { B b = new B(); A a = new A() { @Override public void foo() { System.out.println(b); // warning } }; } }

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin:

Java, 241.16690

Last modified: 29 April 2024