Avoid using protected field in final class

문서 > 코드 분석 > Static Analysis Rules > Avoid using protected field in final class

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Metadata

ID: java-code-style/avoid-protected-in-final-class

Language: Java

Severity: Notice

Category: Code Style

Description

Avoid setting fields as protected inside a final class as they cannot be subclassed.

If flagged, review your class and its usage. Consider adjusting your modifiers and their access.

Non-Compliant Code Examples

public final class Foo {
    private int x;
    protected int y; // visibility should be reviewed

    protected int getY() { // visibility should be reviewed
        return y;
    };
    Foo() {}
}

Compliant Code Examples

public final class Foo {
    private int x;
    public int y;

    public int getY() {
        return y;
    }; 
    Foo() {}
}