private void onKey(char ch) { if (!buttonOk.isEnabled()) { return; } System.out.println("key='" + ch + "' (" + (int) ch + ")"); System.out.println("enter=(" + (int) '\n' + ")"); System.out.println("bs=(" + (int) '\b' + ")"); // Enter == OKボタン if (ch == '\n' || ch == '\r') { // 1問につき複数回解答が送信できてしまうバグへの対処 if (buttonOk.isEnabled()) { onOk(); } return; } // Back Space == 消すボタン if (ch == '\b') { onErase(); return; } String letter = "" + ch; letter = letter.toUpperCase(); if (!ACCEPTED_KEYS.contains(letter)) { return; } letter = StringUtils.toFullWidth(letter); addLetterToAnswer(letter); }