public class Test implements Serializable {
 
    private String name;
 
    public Test(String name) {
        this.name = name;
    }
 
    public String getName() {
        return name;
    }
 
    public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {
        Test test =new Test("ravi");  
 
        Test[] array = new Test[]{
            new Test("a"),
            new Test("b"),
            new Test("c"),
            new Test("d")
        };
 
        FileOutputStream fout=new FileOutputStream("C:\\Users\\Nacho\\Desktop\\output.txt");  
        ObjectOutputStream out=new ObjectOutputStream(fout);  
        out.writeObject(array);
        out.close();
 
 
        FileInputStream fin = new FileInputStream("C:\\Users\\Nacho\\Desktop\\output.txt");
        ObjectInputStream ois = new ObjectInputStream(fin);
        Test[] test2 = (Test[]) ois.readObject();
        for(Test t : test2) System.out.println(t.getName());
 
 
    }
 
}