Mega Code Archive

 

Categories / Java / File Input Output

 

Use ObjectOutputStream and ObjectInputStream to write and read Hashtable

import java.io.FileOutputStream; import java.io.ObjectOutputStream; import java.util.Hashtable; public class Main {   public static void main(String[] args) throws Exception {     Hashtable h = new Hashtable();     h.put("string", "AAA");     h.put("int", new Integer(26));     h.put("double", new Double(Math.PI));     FileOutputStream fileOut = new FileOutputStream("hashtable.ser");     ObjectOutputStream out = new ObjectOutputStream(fileOut);     out.writeObject(h);            FileInputStream fileIn = new FileInputStream("h.ser");     ObjectInputStream in = new ObjectInputStream(fileIn);     Hashtable h = (Hashtable)in.readObject(  );     System.out.println(h.toString(  ));         } }