How do you test code that uses Serializable?

Testing code that uses the Serializable interface in Java requires a few key steps. The general approach involves creating instances of your serializable classes, serializing them into a byte stream, and then deserializing them back into objects to ensure that their states are preserved and that all properties are correctly restored.

Here is a simple example demonstrating how to test a Serializable class in Java:


public class Example implements Serializable {
    private static final long serialVersionUID = 1L;
    private String name;
    private int age;

    public Example(String name, int age) {
        this.name = name;
        this.age = age;
    }

    // Getters and Setters
    
    public static void main(String[] args) {
        Example original = new Example("John Doe", 30);
        
        // Serialize
        ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
        ObjectOutputStream out = new ObjectOutputStream(byteOut);
        out.writeObject(original);
        out.flush();
        
        // Deserialize
        ByteArrayInputStream byteIn = new ByteArrayInputStream(byteOut.toByteArray());
        ObjectInputStream in = new ObjectInputStream(byteIn);
        Example deserialized = (Example) in.readObject();
        
        // Verify
        System.out.println(original.getName().equals(deserialized.getName())); // true
        System.out.println(original.getAge() == deserialized.getAge()); // true
    }
}

How do you test code that uses Serializable?

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How do you test code that uses Serializable?

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