How to replace the occurrences of a substring in a given String using the Java replace() , replaceA

How to replace the occurrences of a substring in a given String using the Java replace() , replaceAll() and replaceFirst() methods In this video, we will discuss on the Java replace() method, which is used for replacing parts of a String with another String or a character with another character. The replace() method returns a String, and it has three variations that we are going to look at, by taking concrete examples 1. In the first example, I will show you how the replace all the occurrences of parts of a String with another String using the replace() method String str = “my string this is my string”; System.out.println(str.replace(“string” , “name”)); We can also replace a character type value with another character like this System.out.println(str.replace(‘m’ , ‘b’)); 2. In the second example, I will show you how to replace all the occurrences of a substring or a character with another String using the replaceAll() method String str = “my string this is my string”; System.out.println(str.replaceAll(“string” , “name”)); Note that the replaceAll() metho replaces all the occurrences of the substring with the new specified String Also, unlike the replace() method, the replaceAll() method returns an error when we want to replace character type values System.out.println(str.replaceFirst(‘y’ , ‘e’)); Will return an error 3. In the third example, I will show you how to replace the first occurrence of a substring with another String using the replaceFirst() method String str = “my string this is my string”; System.out.println(str.replaceFirst(“string” , “name”)); Note that, only the first substring has changed Also, the replaceFirst() method does not work when trying to replace character type values System.out.println(str.replaceFirst(‘y’ , ‘e’)); Will return an error #codingriver #java #programming

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