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+package chessGame;%0A%0Apublic class ExEnemyChessSelected extends Exception %7B%0A%0A%09/**%0A%09 * %0A%09 */%0A%09private static final long serialVersionUID = -3319443552946642956L;%0A%09public ExEnemyChessSelected() %7Bsuper(%22Selected piece does not belong to you!%22);%7D%0A%0A%7D%0A

Create ExEnemyChessSelected.java