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java 固定長文字列の中身の有無を調べる方法

Java

Posted at 2020-08-14

		String sti = "     ";
		//スペースをtrimする
		//その結果、ブランクであるかどうか
		if(sti.trim().isEmpty()) {
			System.out.println("blank");
		}else {
			System.out.println("notBlank");
		}

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