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POJava: precision error using long and int
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  1. POJava: precision error using long and int
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    copied!<p>(Still) a newbie in Java, trying to work with <code>long</code> and <code>int</code> values. I'm trying to deduct 1 from a long value and it keeps telling me there's a possible loss of error?</p> <p>I looked at other questions but all the ones I saw addressed either <code>float</code> precision errors or people did not know why they were using <code>long</code> instead of <code>int</code>. In my case, it is required in the question I'm given.</p> <pre><code> String bookingRequest = ""; int bookingElements = 4; String[] bookingDetails = new String[bookingElements]; long seatNo = 0; for(int x = 1; x &lt;= counter; x++) { bookingRequest = input.nextLine(); bookingDetails = bookingRequest.split(" "); seatNo = Long.parseLong(bookingDetails[0]); seatHolders[seatNo - 1] = bookingDetails[1] + " " + bookingDetails[2] + " " + bookingDetails[3]; } // A bit of code later long check = 0; for (long c = 1; c &lt;= seatChecker; c++) { check = input.nextLong(); //System.out.println(seatHolders[check - 1]); seatFinder[c - 1] = seatHolders[check - 1]; } </code></pre> <p>I do know that there is most probably a better way of writing this code, but as I have to use a <code>long</code> data type to take in the seat number (as according to the question), I only really need to know why it doesn't like minusing one from <code>long</code> values.</p> <p>The error:</p> <pre><code>Test.java:22: error: possible loss of precision seatHolders[seatNo - 1] = bookingDetails[1] + " " + book ingDetails[2] + " " + bookingDetails[3]; ^ required: int found: long Test.java:31: error: possible loss of precision seatFinder[c - 1] = seatHolders[check - 1]; ^ required: int found: long Test.java:31: error: possible loss of precision seatFinder[c - 1] = seatHolders[check - 1]; ^ required: int found: long 3 errors </code></pre> <p>Thanks in advance! :)</p>
 

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