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Program: How to decompress the compressed objects using zip utility?


This example shows how to decompress the compressed objects. Previous example shows how to compress objects and store it to the file.



public class RetrieveMyObjects {
	public static void main(String a[]){

		FileInputStream fis = null;
		GZIPInputStream gs = null;
		ObjectInputStream ois = null;
		try {
			fis = new FileInputStream("C:/MyObjectStore");
			gs = new GZIPInputStream(fis);
			ois = new ObjectInputStream(gs);
			Mobile m1 = (Mobile) ois.readObject();
			System.out.println(m1.getNumber()+"   "+m1.getOwner());
			Mobile m2 = (Mobile) ois.readObject();
			System.out.println(m2.getNumber()+"   "+m2.getOwner());
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
		} catch (IOException e) {
			// TODO Auto-generated catch block
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
		} finally{
				if(ois != null) ois.close();
				if(fis != null) fis.close();
			} catch (Exception ex){}


class Mobile implements Serializable{
	private String number;
	private String owner;
	public Mobile(String num, String own){
		this.number = num;
		this.owner = own;
	public String getNumber() {
		return number;
	public void setNumber(String number) {
		this.number = number;
	public String getOwner() {
		return owner;
	public void setOwner(String owner) {
		this.owner = owner;

1234566778   JOCK
7686291729   Mike
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List of all class sample examples:

  1. How to compress byte array in java?
  2. How to decompress byte array in java?
  3. How to zip a single file?
  4. How to zip multiple files?
  5. How to read zip files entries or file name list?
  6. How to unzip files in java?
  7. How to generate checksum value for for a file in java?
  8. How to compress and store objects using zip utility?
  9. How to decompress the compressed objects using zip utility?
  10. How to zip a file using ZipFile class?
  11. How to compress a file in GZip format?
  12. How to uncompress a file from GZip format?
Knowledge Centre
What is daemon thread?
Daemon thread is a low priority thread. It runs intermittently in the back ground, and takes care of the garbage collection operation for the java runtime system. By calling setDaemon() method is used to create a daemon thread.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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