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OK let's say I have an array filled with {"tube", "are", "fun"} and then I have a JTextField and if I type either one of those commands to do something and if NOT to get like a message saying "Command not found".
I tried looking in Java docs but all I am getting is things that I don't want like questions and stuff... so, how is this done? I know there is a "in array" function but I'm not too good with combining the two together.
Thanks.
Here is what I have so far:
String[] dan = {"Red", "Orange", "Yellow", "Green", "Blue", "Violet", "Orange", "Blue"}; boolean contains = dan.contains(say.getText()); but I am getting cannot find symbol in dan.contains
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Using the indexOf() method In this method, what we do is that we compare the index of all the items of an array with the index of the first time that number occurs. If they don't match, that implies that the element is a duplicate.
One more way to detect duplication in the java array is adding every element of the array into HashSet which is a Set implementation. Since the add(Object obj) method of Set returns false if Set already contains an element to be added, it can be used to find out if the array contains duplicates in Java or not.
To check if all values in an array are equal:Use the Array. every() method to iterate over the array. Check if each array element is equal to the first one. The every method only returns true if the condition is met for all array elements.
This is what you're looking for:
List<String> dan = Arrays.asList("Red", "Orange", "Yellow", "Green", "Blue", "Violet", "Orange", "Blue"); boolean contains = dan.contains(say.getText()); If you have a list of not repeated values, prefer using a Set<String> which has the same contains method
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String[] a= {"tube", "are", "fun"}; Arrays.asList(a).contains("any"); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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