JVM will not likely execute the code, if the program is missing the key method. That's why, it is among The most crucial methods of Java, and having a proper idea of it is vital. The Java 以下のサンプルコードでは、thisの位置が間違っているため、コンパイルエラーが発生します。 If you wish to use W3Schools expert services as an academic establishment, https://javporn71369.topbloghub.com/38453543/new-step-by-step-map-for-jav-free