i have figured out a way to replace vowels into * but it only converts the first line
input: break robert yeah
output: br**k
here is the code
public class Solution {
public static void main(String[] args) {
String enterWord;
Scanner scan = new Scanner (System.in);
enterWord = scan.nextLine();
enterWord = enterWord.replaceAll("[aeiou]", "*");
System.out.println(enterWord);
}
}
is there any way that it reads all three words?
Your code works as you want (in:break robert yeah out: br**k r*b*rt y**h) on my env(Windows10, java1.8.0_271), maybe you can set a breakpoint on enterWord = enterWord.replaceAll("[aeiou]", "*"); and check is the enterWord recived whole input string.
You need a loop to keep getting and processing the inputs. Also, I suggest you use (?i) with the regex to make it case-insensitive.
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
String enterWord, answer = "y";
Scanner scan = new Scanner(System.in);
do {
System.out.print("Enter a word: ");
enterWord = scan.nextLine();
enterWord = enterWord.replaceAll("(?i)[aeiou]", "*");
System.out.println("After replacing vowels with * it becomes " + enterWord);
System.out.print("Do you wish to conntinue[y/n]: ");
answer = scan.nextLine();
} while (answer.equalsIgnoreCase("y"));
}
}
A sample run:
Enter a word: hello
After replacing vowels with * it becomes h*ll*
Do you wish to conntinue[y/n]: y
Enter a word: India
After replacing vowels with * it becomes *nd**
Do you wish to conntinue[y/n]: n
For a single string spanning multiple lines, the method, String#replaceAll works for the entire string as shown below:
public class Main {
public static void main(String[] args) {
String str = "break\n" +
"robert\n" +
"yeah";
System.out.println(str.replaceAll("(?i)[aeiou]", "*"));
}
}
Output:
br**k
r*b*rt
y**h
Using this feature, you can build a string of multiple lines interactively and finally change all the vowels to *.
Demo:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
String text = "";
Scanner scan = new Scanner(System.in);
StringBuilder sb = new StringBuilder();
System.out.println("Keep enter some text (Press Enter without any text to stop): ");
while (true) {
text = scan.nextLine();
if (text.length() > 0) {
sb.append(text).append(System.lineSeparator());
} else {
break;
}
}
System.out.println("Your input: \n" + sb);
String str = sb.toString().replaceAll("(?i)[aeiou]", "*");
System.out.println("After converting each vowel to *, your input becomes: \n" + str);
}
}
A sample run:
Keep enter some text (Press Enter without any text to stop):
break
robert
yeah
Your input:
break
robert
yeah
After converting each vowel to *, your input becomes:
br**k
r*b*rt
y**h
break robert yeahon same input line? If yes, then your code is givingbr**k r*b*rt y**hin my environment. If no, then put 3 lines fromscan.nextLine();inside a loop.