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POanother homework question error unexpected type required:variable found:value
 

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  1. POanother homework question error unexpected type required:variable found:value
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    <p>I have another error, unexpected type required:variable found:value and I can't figure out why. The code is as follows:</p> <pre><code>public class ISBNText extends JTextField { protected static final int ISBN_NUM=10; protected static String bookNum; protected JTextField bookText; protected String valid; public ISBNText() { super(20); } public String getISBN() { bookNum = getText(); return bookNum; } private String validateISBN(String bookNum)throws ISBNException { boolean check=false; bookNum.replaceAll("-",""); if (bookNum.length()!=ISBN_NUM) throw new ISBNException ("ISBN "+ bookNum + " must be 10 characters"); for (int i=0;i&lt;bookNum.length()-1;i++) { if (Character.isDigit(bookNum.charAt(i))) check=true; } if (bookNum.charAt(9)=='X') check=true; if (Character.isDigit(bookNum.charAt(9))) check=true; if (check=false) throw new ISBNException ("ISBN " + bookNum + " must contain all digits" + "or 'X' in the last position"); if (checkDigit(bookNum)=false) //////////COMPILER ERROR HERE//////// throw new ISBNException ("ISBN " + bookNum + " is invalid.\n" + "ISBN " + bookNum + " should be " + validnum); if (check=true) return bookNum; } public boolean checkDigit (String bookNum) { boolean status; double total=0.0; char[] check = {0,1,2,3,4,5,6,7,8,9,X}; int[] checkNums= {0,1,2,3,4,5,6,7,8,9,10}; for (int i=0;i&lt;bookNum.length;i++) { check(i)=bookNum[i]; total+=check[i]*checkNums[i]; } if ((checkNums[9] % 11)==check[9]) status = true; else status=false; } } </code></pre> <p>This program is being used to check the validity of an ISBN number entered by a user. I don't understand why it says it finds value and it expects a variable, as bookNum is a variable. I have no doubt that this is due to my limited knowledge. Hoping you guys can help me out one more time.</p>
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    1. USJonathon Faust
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      1. POanother homework question error unexpected type required:variable found:value
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      1. POanother homework question error unexpected type required:variable found:value
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    1. COI suspect ISBN_NUM should have a lowercase leading character. But what line is the error on?
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      1. POanother homework question error unexpected type required:variable found:value
      1. USSatya
 

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