To replace a word with asterisks in a sentence, the Java program is as follows −
Example
public class Demo{ static String replace_word(String sentence, String pattern){ String[] word_list = sentence.split("\\s+"); String my_result = ""; String asterisk_val = ""; for (int i = 0; i < pattern.length(); i++) asterisk_val += '*'; int my_index = 0; for (String i : word_list){ if (i.compareTo(pattern) == 0) word_list[my_index] = asterisk_val; my_index++; } for (String i : word_list) my_result += i + ' '; return my_result; } public static void main(String[] args){ String sentence = "This is a sample only, the sky is blue, water is transparent "; String pattern = "sample"; System.out.println(replace_word(sentence, pattern)); } }
Output
This is a ****** only, the sky is blue, water is transparent
A class named Demo contains a function named ‘replace_word’ that takes the sentence and the pattern as parameters. A sentence is split and stored in a string array. An empty string is defined, and the pattern is iterated over, based on its length.
An asterisk value is defined as ‘*’ and for every character in the sentence, the character is compared to the pattern and a specific occurrence is replaced with the asterisk symbol. The final string is displayed on the console.