How to get the identity hash codes for files

How to get the identity hash codes for files

publicstaticvoid main(String[] args){
    File file1 = new File("a");
    File file2 = new File("b");
    File file3 = new File("c");
    int ihc1=System.identityHashCode(file1);
    int ihc2=System.identityHashCode(file2);
    int
ihc3=System.identityHashCode(file3);
    System.out.println(ihc1);
    System.out.println(ihc2);
    System.out.println(ihc3);
}

Output:

169174794
52414130
455987640