Summary of Java-transient usage code examples

What you learn on paper is shallow, but you know you have to do it in detail --Lu You Ask the canal how clear it is to have a source of living water --Zhu Xi

transient has the meaning of "temporary" and "ephemeral". We have learned about Serializable and Java serialization. When we do not want to serialize certain variables You can set this variable to transient. Transient is a keyword in the Java language and is used to indicate that a domain is not part of the serialization of the object. transient indicates that a attribute is temporary and will not be serialized.

public class TransientDemo implements Serializable{
/**
     *
     */
private static final long serialVersionUID = 1L;
    private  transient String name;
    private String password;

    public String getName() {
        return name;
    }

    public void setName(String name) {
    this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

public static void main(String[] args) throws FileNotFoundException, IOException, ClassNotFoundException {
// TODO Auto-generated method stub  
    String path="D:"+File.separator+"object.txt";
    File file=new File(path);
    TransientDemo transientDemo=new TransientDemo();
    transientDemo.setName("姓名");
    transientDemo.setPassword("密码");
    ObjectOutput output=new ObjectOutputStream(new FileOutputStream(file));
    output.writeObject(transientDemo);
    ObjectInput input=new ObjectInputStream(new FileInputStream(file));
    TransientDemo demo=(    TransientDemo )input.readObject();
    System.out.println(demo.getName()+demo.getPassword());
    }

}

The resulting password output is

null

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