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Showing content from https://github.com/pmd/pmd/issues/1903 below:

[java] UnsynchronizedStaticFormatter doesn't allow block-level synchronization when using allowMethodLevelSynchronization=true · Issue #1903 · pmd/pmd · GitHub

Affects PMD Version:

6.16.0

Rule:

UnsynchronizedStaticFormatter

Description:

If method level syncs are allowed, the parent method MUST be synchronized and static. In the case the static member is explicitly synchronized with a block in a non-synchronized method, it will still be counted as a violation.

Code Sample demonstrating the issue:

    <test-code>
        <description>#xxx</description>
        <rule-property name="allowMethodLevelSynchronization">true</rule-property>
        <expected-problems>0</expected-problems>
        <code><![CDATA[
import java.text.SimpleDateFormat;

public class Foo {
    private static final SimpleDateFormat sdf = new SimpleDateFormat();
    private void bar() {
        synchronized(sdf) { 
            sdf.format();
        }
    }
}
     ]]></code>
    </test-code>

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