Type safety: Unchecked cast

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In my spring application context file, I have something like:

<util:map id="someMap" map-class="java.util.HashMap" key-type="java.lang.String" value-type="java.lang.String">
    <entry key="some_key" value="some value" />
    <entry key="some_key_2" value="some value" />   
</util:map>

In java class, the implementation looks like:

private Map<String, String> someMap = new HashMap<String, String>();
someMap = (HashMap<String, String>)getApplicationContext().getBean("someMap");

In Eclipse, I see a warning that says:

Type safety: Unchecked cast from Object to HashMap<String,String>

What went wrong?

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