Java/Class/hashCode

Comparing Object Values Using Hash Codes

 

import java.io.File;
public class Main {
  public static void main(String[] argv) throws Exception {
    File file1 = new File("a");
    File file2 = new File("a");
    File file3 = new File("b");
    int hc1 = file1.hashCode();
    System.out.println(hc1);
    int hc2 = file2.hashCode();
    System.out.println(hc2);
    int hc3 = file3.hashCode();
    System.out.println(hc3);
  }
}

Get the identity hash codes

 
import java.io.File;
public class Main {
  public static void main(String[] argv) throws Exception {
    File file1 = new File("a");
    File file2 = new File("a");
    File file3 = new File("b");
    int ihc1 = System.identityHashCode(file1);
    System.out.println(ihc1);
    int ihc2 = System.identityHashCode(file2);
    System.out.println(ihc2);
    int ihc3 = System.identityHashCode(file3);
    System.out.println(ihc3);
  }
}