I have a string similar to the one below:
String abc = "122222";
and I want to be able to replace a specified character inside string, so the '1' becomes '2' in the example above.
6 Answers
String abc = "122222";
abc = abc.replace('1','2');
4 Comments
Marcos
It's Java, so you need to use double quotes.
Marco Forberg
@enrmarc no. there are two replace methods.
AllTooSir
even single quote is fine
Marcos
@MarcoForberg you are right. I learned something new today.
Simply do:
abc = abc.replace('1', '2');
Comments
You should use replaceFirst if you want to replace only the first 1
String abc = "122222";
abc = abc.replaceFirst("1","2");
because replace will replace all occurrences of 1 in abc.
Comments
A quick search for the java string API would have given you what you needed. With examples too.
2 Comments
Marco Forberg
This should rather be a comment than an answer
Dark Star1
Teaching the man to fish
Here i am replacing "2" with "3" test this.
public class TextDemo {
public static void main(String arg[]) {
String a = "11112bbbb";
int b = a.indexOf("2");
String c = a.substring(0, b);
String d = a.substring(b);
String e = d.substring(1);
String f = "3" + e;
String finalString = c + f;
System.out.println(finalString);
}
2 Comments
Marco Forberg
a bit complicated and you forgot to check whether
indexOf() returned -1
KhAn SaAb
@Macro Forberg I have given basic idea , need some validation check..:)
"122222".replace("1","2");