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import java.text.CharacterIterator;
import java.text.StringCharacterIterator;
public class Main {
public static void main(String[] argv) throws Exception {
CharacterIterator it = new StringCharacterIterator("abcd");
int begin = 5;
int end = 9;
int pos = 6;
it = new StringCharacterIterator("abcd efgh ijkl", begin, end, pos);
char ch = it.current();
System.out.println(ch);
ch = it.last();
System.out.println(ch);
}
}
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