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In Java is there a way to check the condition:
"Does this single character appear at all in string x"
without using a loop?
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Using in operator The Pythonic, fast way to check for the specific character in a string uses the in operator. It returns True if the character is found in the string and False otherwise. ch = '. '
This str. indexOf() method is used to check the index of the passed character/letter. If the letter/character is present in the string then it will return non-negative value. If the letter/ character is not present in the String, it will return -1.
You can use contains(), indexOf() and lastIndexOf() method to check if one String contains another String in Java or not. If a String contains another String then it's known as a substring. The indexOf() method accepts a String and returns the starting position of the string if it exists, otherwise, it will return -1.
You can use string.indexOf('a').
If the char a is present in string :
it returns the the index of the first occurrence of the character in the character sequence represented by this object, or -1 if the character does not occur.
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String.contains() which checks if the string contains a specified sequence of char valuesString.indexOf() which returns the index within the string of the first occurence of the specified character or substring (there are 4 variations of this method)
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