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Javaで文字列に絵文字が含まれているか判定する

Last updated at Posted at 2018-05-19

いかにして絵文字を判定するか

絵文字,環境によって表示できなかったりして嫌ですよね💩
一旦文字コードをEUC_JPに変換して元に戻し,元の文字列と比較することで判定が可能です👍🏻

実装

isIncludeEmoji.java
public static boolean isIncludeEmoji(String str){
	try{
		byte[] bytes = str.getBytes("EUC_JP"); //EUC_JPでバイト配列に変換
		String newStr = new String(bytes, "EUC_JP"); //文字列に再変換
		return(!str.equals(newStr)); 
	}catch(UnsupportedEncodingException e){
		e.printStackTrace();
	}
	return true;
}
サンプル.java
System.out.println(isIncludeEmoji("ひよこちゃん🐣")); //true
System.out.println(isIncludeEmoji("虚無")); //false

間違っていたら教えて頂けると幸いです🙏🏼

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