char を整数に変換したい場合には、Character.getNumericValue() または Character.digit() を使用するか、char を int にキャストする必要があります。 1. Character.getNumericValue() このメソッドは、指定された文字に対応する整数値を返します。 文字が数字 ('0'～'9') であれば ...

if you don't like how the formatter laid out your code, you may need to introduce new functions/variables the formatter is not as clever as humans are, so it can sometimes produce less readable code ...

A few years ago I wrote a Soduko solver in Java. Works great, except I have to edit the source file to change the input because I could never get Swing to work like my mental model said it should. Cut ...