53 lines
1.3 KiB
Java
53 lines
1.3 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8202056
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* @compile/ref=Extern.out -XDrawDiagnostics -Xlint:serial Extern.java
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* @compile/ref=empty.out -XDrawDiagnostics Extern.java
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*/
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import java.io.*;
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class Extern implements Externalizable {
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private static final long serialVersionUID = 42;
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// No-arg constructor on an Externalizable class must be public
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protected Extern() {}
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// ineffectual
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private static final ObjectStreamField[] serialPersistentFields = {};
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public void writeExternal(ObjectOutput out) throws IOException {
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return;
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}
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
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return;
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}
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// ineffectual
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private void readObject(ObjectInputStream stream)
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throws IOException, ClassNotFoundException {
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stream.defaultReadObject();
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}
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// ineffectual
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private void writeObject(ObjectOutputStream stream) throws IOException {
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stream.defaultWriteObject();
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}
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// ineffectual
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private void readObjectNoData() throws ObjectStreamException {
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return;
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}
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// (possibly) effective
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private Object writeReplace() throws ObjectStreamException {
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return null;
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}
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// (possibly) effective
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private Object readResolve() throws ObjectStreamException {
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return null;
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}
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}
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