[JAVA] contains() 메소드

docs.oracle.com/en/java/javase/15/docs/api/java.base/java/lang/String.html#contains(java.lang.CharSequence)

String (Java SE 15 & JDK 15)

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java.lang.String.contains(CharSequence)

 

public boolean contains​(CharSequence s)

 

매개변수 CharSequence :

CharSequence 문자열이 포함되어있는지 확인

 

반환값 boolean :

포함되어있으면 true, 포함되어있지 않으면 false 

 

 

String.contains(str)

 

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예제

public class ContainsEx {

	public static void main(String[] args) {
		String str1 = "ABCDEFG";
		String str2 = "HIJKLMN";
		
		System.out.println(str1.contains("ABC"));
		System.out.println(str2.contains("ABC"));
	}
}

 

출력

true false

 

 

사용 예 : nanarin.tistory.com/51