package com.pkm; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.HashMap; import java.util.Map; /** * * @author PRITOM */ public class MapObjectToByteArrayAndSaveToFile { public static void main(String[] args) throws Exception { Map<Integer, String> data = new HashMap<Integer, String>(); data.put(1, "hello"); data.put(2, "world"); System.out.println(data.toString()); store(data); data = (Map<Integer, String>) load(); System.out.println(data.toString()); } public static Object load() throws Exception { FileInputStream fileInputStream = new FileInputStream("object.txt"); ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream); return objectInputStream.readObject(); } public static void store(Object data) throws Exception { FileOutputStream fileOutputStream = new FileOutputStream("object.txt"); ObjectOutputStream outputStream = new ObjectOutputStream(fileOutputStream); outputStream.writeObject(data); outputStream.close(); } }
Showing posts with label Stream. Show all posts
Showing posts with label Stream. Show all posts
Saturday, December 17, 2016
How to convert Map / Object to Bytes and save to internal storage and read back
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