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yuki
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[wip]ch 18.13
1 parent be0c04b commit e919bb5

14 files changed

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‎.gitignore‎

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# idea
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.idea/
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*.iml
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*.iml
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target/**

‎pom.xml‎

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<version>1.0.13</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/nu.xom/com.springsource.nu.xom -->
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<dependency>
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<groupId>nu.xom</groupId>
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<artifactId>com.springsource.nu.xom</artifactId>
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<version>1.2.5</version>
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</dependency>
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</dependencies>
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</project>

‎src/java/code/ch18/Alien.java‎

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package code.ch18;
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import java.io.Serializable;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class Alien implements Serializable {
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}

‎src/java/code/ch18/Blip3.java‎

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package code.ch18;
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import java.io.*;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class Blip3 implements Externalizable {
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private int i;
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private String s;
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public Blip3() {
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System.out.println("blip3 constructor");
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}
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public Blip3(int i, String s) {
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System.out.println("blip3(int i, String s) constructor");
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this.i = i;
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this.s = s;
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}
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@Override
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public String toString() {
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return s + i;
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}
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@Override
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public void writeExternal(ObjectOutput out) throws IOException {
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System.out.println("blip3 writeExternal");
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out.writeObject(s);
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out.writeInt(i);
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}
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@Override
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
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System.out.println("blip3 readExternal");
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s = (String) in.readObject();
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i = in.readInt();
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}
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public static void main(String[] args) throws IOException, ClassNotFoundException {
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System.out.println("constructing objects:");
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Blip3 blip3 = new Blip3(47, "A String");
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System.out.println(blip3);
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ObjectOutputStream out = new ObjectOutputStream(
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new FileOutputStream("Blip3.out")
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);
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System.out.println("saving b3:");
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out.writeObject(blip3);
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out.close();
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System.out.println("recovering b3: ");
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ObjectInputStream in = new ObjectInputStream(
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new FileInputStream("Blip3.out")
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);
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blip3 = (Blip3) in.readObject();
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System.out.println(blip3);
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}
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}

‎src/java/code/ch18/Blips.java‎

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package code.ch18;
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import java.io.*;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class Blips {
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public static void main(String[] args) throws IOException, ClassNotFoundException {
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System.out.println("Constructing Objects:");
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Blip1 b1 = new Blip1();
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Blip2 b2 = new Blip2();
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ObjectOutputStream o = new ObjectOutputStream(
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new FileOutputStream("Blips.out")
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);
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System.out.println("Saving objects:");
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o.writeObject(b1);
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o.writeObject(b2);
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o.close();
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ObjectInputStream in = new ObjectInputStream(
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new FileInputStream("Blips.out")
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);
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System.out.println("recovering b1:");
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b1 = (Blip1) in.readObject();
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System.out.println("recovering b2:");
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b2 = (Blip2) in.readObject();
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}
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}
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class Blip1 implements Externalizable {
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public Blip1() {
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System.out.println("Blip1 Constructor");
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}
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@Override
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public void writeExternal(ObjectOutput out) throws IOException {
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System.out.println("Blip1.writeExternal");
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}
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@Override
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
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System.out.println("Blip1.readExternal");
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}
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}
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class Blip2 implements Externalizable {
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Blip2() {
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System.out.println("Blip2 Constructor");
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}
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@Override
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public void writeExternal(ObjectOutput out) throws IOException {
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System.out.println("Blip2.writeExternal");
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}
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@Override
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
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System.out.println("Blip2.readExternal");
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}
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}
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‎src/java/code/ch18/FreezeAlien.java‎

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package code.ch18;
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import java.io.*;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class FreezeAlien {
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public static void main(String[] args) throws IOException {
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ObjectOutput out = new ObjectOutputStream(
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new FileOutputStream("X.file")
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);
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Alien quellek = new Alien();
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out.writeObject(quellek);
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}
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}

‎src/java/code/ch18/GZIPCompress.java‎

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package code.ch18;
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import java.io.*;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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/**
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* @author yuzhe
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* @since 10/16/18
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*/
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public class GZIPCompress {
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public static void main(String[] args) throws IOException {
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BufferedReader in = new BufferedReader(
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new FileReader("src/resources/ch18/data.txt")
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);
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BufferedOutputStream out = new BufferedOutputStream(
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new GZIPOutputStream(
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new FileOutputStream("src/resources/ch18/data.txt.gz")
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)
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);
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System.out.println("writing file");
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int c;
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while ((c = in.read()) != -1) {
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out.write(c);
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}
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out.flush();
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in.close();
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out.close();
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System.out.println("reading file:");
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BufferedReader in2 = new BufferedReader(
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new InputStreamReader(new GZIPInputStream(
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new FileInputStream("src/resources/ch18/data.txt.gz")
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))
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);
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String s;
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while ((s = in2.readLine()) != null) {
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System.out.println(s);
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}
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in2.close();
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}
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}

‎src/java/code/ch18/Person.java‎

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package code.ch18;
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import nu.xom.Element;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class Person {
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private String first, last;
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public Person(String f, String l) {
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this.first = f;
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this.last = l;
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}
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public Element getXML(){
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Element person = new Element("person");
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Element firstName = new Element("first");
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firstName.appendChild(first);
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Element lastName = new Element("last");
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lastName.appendChild(last);
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person.appendChild(firstName);
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person.appendChild(lastName);
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return person;
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}
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}

‎src/java/code/ch18/RecoverCADState.java‎

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package code.ch18;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.util.List;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class RecoverCADState {
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public static void main(String[] args) throws IOException, ClassNotFoundException {
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ObjectInputStream in = new ObjectInputStream(new FileInputStream("CADState.out"));
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List<Class<? extends Shape>> shapeTypes = (List<Class<? extends Shape>>) in.readObject();
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Line.deserializeStaticState(in);
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List<Shape> shapes = (List<Shape>) in.readObject();
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System.out.println(shapes);
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}
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}

‎src/java/code/ch18/SerialCtl.java‎

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package code.ch18;
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import java.io.*;
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/**
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* @author yuzhe
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* @since 10/17/18
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*/
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public class SerialCtl implements Serializable {
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private String a;
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private transient String b;
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public SerialCtl(String aa, String bb) {
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a = "not transient: " + aa;
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b = "transient: " + bb;
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}
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@Override
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public String toString() {
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return a + "\t" + b;
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}
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private void writeObject(ObjectOutputStream stream) throws IOException {
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stream.defaultWriteObject();
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stream.writeObject(b);
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}
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private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException{
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stream.defaultReadObject();
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b = (String) stream.readObject();
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}
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public static void main(String[] args) throws IOException, ClassNotFoundException {
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SerialCtl sc = new SerialCtl("test1", "test2");
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System.out.println("before:" + sc);
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ByteArrayOutputStream buf = new ByteArrayOutputStream();
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ObjectOutputStream out = new ObjectOutputStream(buf);
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out.writeObject(sc);
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ObjectInputStream in = new ObjectInputStream(
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new ByteArrayInputStream(buf.toByteArray())
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);
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SerialCtl sc2 = (SerialCtl) in.readObject();
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System.out.println("After: " + sc2);
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}
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}

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