note

【エラー】incompatible types: char cannot be converted to java.lang.String

このエラーが出たのときの対処について備忘録です。 文字列を求めている関数に文字を渡したことで発生した。 Javaの性質上 シングルクォーテーションで囲むと文字 ダブルコートーテーションで囲むと文字列 上記のエラーは文字型（シングル）は対応して ...
GitHub

java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.String

Either I get a JS exception showing me a useful error message and stack trace, or the number (double in Java) gets cast to string. java.lang.ClassCastException: java ...
GitHub

Java 9: InaccessibleObjectException: private final byte[] java.lang.String.value

InaccessibleObjectException: Unable to make field private final byte[] java.lang.String.value accessible: module java.base does not "opens java.lang" to unnamed module @2a5ca609 ...
TheServerSide

What is a Java string?

A Java string is a sequence of characters that exists as an object of the class java.lang. Java strings are created and manipulated through the string class. Once created, a string is immutable -- its ...
InfoWorld

How to use Java generics to avoid ClassCastExceptions

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods. Generics are used in ...