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you can but you need to use an Iterator and its remove() method'<br />
How you are doing it will not work<br />

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you can but you need to use an Iterator and its remove() method'
How you are doing it will not work


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Ok but what do you mean with an iterator and a remove method?<br />
<br />
Thanks
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Ok but what do you mean with an iterator and a remove method?

Thanks

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<div class="content wysiwyg-content">
Hi,<br />
<br />
Is it legal to remove an element from a HashMap while iterating over it? Something like:<br />
<br />
&nbsp; HashMap&lt;Integer, String&gt; test = new HashMap&lt;Integer, String();<br />
&nbsp; test.put(0, &quot;a&quot;);<br />
&nbsp; test.put(1, &quot;b&quot;);<br />
&nbsp; test.put(2, &quot;c&quot;);<br />
<br />
&nbsp; for(Entry&lt;Integer, String&gt; entry : test.entrySet()){<br />
&nbsp; &nbsp; &nbsp; if (entry.getValue().equals(&quot;<wbr />b&quot;)) {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; test.remove(entry.getKey()<wbr />);<br />
&nbsp; &nbsp; &nbsp; }<br />
&nbsp; &nbsp; &nbsp; // Ok to keep iterating?<br />
&nbsp; }<br />
<br />
Thanks
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Hi,

Is it legal to remove an element from a HashMap while iterating over it? Something like:

  HashMap<Integer, String> test = new HashMap<Integer, String();
  test.put(0, "a");
  test.put(1, "b");
  test.put(2, "c");

  for(Entry<Integer, String> entry : test.entrySet()){
      if (entry.getValue().equals("b")) {
          test.remove(entry.getKey());
      }
      // Ok to keep iterating?
  }

Thanks

Ok to delete element from HashMap while iterating?

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.