rspec/rules/S2272/rule.adoc
2021-01-27 13:42:22 +01:00

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By contract, any implementation of the ``++java.util.Iterator.next()++`` method should throw a ``++NoSuchElementException++`` exception when the iteration has no more elements. Any other behavior when the iteration is done could lead to unexpected behavior for users of this ``++Iterator++``.
== Noncompliant Code Example
----
public class MyIterator implements Iterator<String>{
...
public String next(){
if(!hasNext()){
return null;
}
...
}
}
----
== Compliant Solution
----
public class MyIterator implements Iterator<String>{
...
public String next(){
if(!hasNext()){
throw new NoSuchElementException();
}
...
}
}
----