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import org.apache.commons.lang.ArrayUtils;
public class Main {
public static void main(String[] args) {
String[] colours = { "Red", "Orange", "Yellow", "Green", "Blue", "Violet", "Orange", "Blue" };
boolean contains = ArrayUtils.contains(colours, "Blue");
System.out.println("Contains Blue? " + contains);
int indexOfYellow = ArrayUtils.indexOf(colours, "Yellow");
System.out.println("indexOfYellow = " + indexOfYellow);
int indexOfOrange = ArrayUtils.indexOf(colours, "Orange");
System.out.println("indexOfOrange = " + indexOfOrange);
int lastIndexOfOrange = ArrayUtils.lastIndexOf(colours, "Orange");
System.out.println("lastIndexOfOrange = " + lastIndexOfOrange);
}
}
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