java - Getting an element from a Set -

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Why not set provides an operation to get an element that is another element Is equal? 

  set & lt; Foo & gt; Set = ...; ... fu fu = new foo (1, 2, 3); Foo bar = set. Gate (af); // Foo   
 I can ask that there is an element equal to  set  in  bar  So why can not I get that element? To clarify, the  par  method is overridden, but it only checks one field, not all, so two  Foo  Objects are considered equal to actually have different values, so I can not just use  foo . 
 "post-text" itemprop = "text"      
   
   
  
 Element near you There is no other option, but to use the iterator:  
  in public static zero Net (string [] Args) {Set  Set = New Hashet  (); Set (New Foo ("Halo"); (Iterator & Lt; Fu & gt; ; This = set; nitator (); it.hasNext ();) {FU F = it.NET (); if (f.equals (new Foo) ("Hello")) System.out.println ("foo Found ");}} Fixed square fu {string string; Foo (string string) {this.string = string;} @ Override Public Ent Hashod () {Return String.hashCode ();} @ Override Public Boolean Par (Object obj) {Return String. Angle (((foo) ozje). String); }}

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