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Reading Basic Data From an Object Stream

import java.awt.Polygon; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; public class MainClass {   public static void main(String[] args) {     int[] x = new int[] { 1, 2, 3 };     int[] y = new int[] { 4, 5, 6 };     Polygon polygon = new Polygon(x, y, x.length);     try {       ObjectOutputStream objectOut = new ObjectOutputStream(new BufferedOutputStream(           new FileOutputStream("C:/Polygons.bin")));       objectOut.writeObject(polygon);       objectOut.close();     } catch (IOException e) {       e.printStackTrace(System.err);     }     try {       ObjectInputStream objectIn = new ObjectInputStream(new BufferedInputStream(           new FileInputStream("C:/Polygons.bin")));       Polygon theLine = (Polygon) objectIn.readObject();       System.out.println(theLine);       objectIn.close();     } catch (Exception e) {       e.printStackTrace(System.err);     }   } }