How can i find the index value or even if a certain string exsits in an array

Question

I have tried using the .indexof method but I can't figure out why it won't work, as all I need is to find if a value exists in an array ?


        final String subject = ((EditText)findViewById(R.id.subject)).getText().toString();


        final String  subjects[] ={"biology","business","chemistry","computer science","critical thinking",
                "economics","english language", "english literature","further mathematics","geography",
                "german","politics","history","ict","japanese","law", "mathematics","psychology",
                "religious studies","sociology","spanish"};

        final String  creative_subjects[] ={"art and design","fine art", "dance","design and technology",
                "design and textiles","fashion and textiles", "film studies ","music","performing arts",
                "photography", "physical education","graphics"};

        creative_subjects.indexOf(subject.toLowerCase());

Does this answer your question? [How do I determine whether an array contains a particular value in Java?](https://stackoverflow.com/questions/1128723/how-do-i-determine-whether-an-array-contains-a-particular-value-in-java) — Muhammad Junaid Khalid, Jan 30 '21 at 14:31

score 2 · Answer 1 · answered Jan 30 '21 at 14:32

2

Arrays don't have many useful methods. But you can wrap an array as a List:

Arrays.asList(creative_subjects).indexOf(...)
Arrays.asList(creative_subjects).contains(...)
// Etc.

answered Jan 30 '21 at 14:32

Andy Turner

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score 0 · Answer 2 · answered Jan 30 '21 at 14:33

0

Try this.

String[] values = {"AB","BC","CD","AE"};
boolean contains = Arrays.stream(values).anyMatch("s"::equals);

For further clarifications please visit This answer

answered Jan 30 '21 at 14:33

Muhammad Junaid Khalid

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How can i find the index value or even if a certain string exsits in an array

2 Answers2