CODEWITHSUNDEEP
javagroovy
n92
n92

Reputation: 7602

How to replace a string

I have string with the values: "My name [name], my city [cIty], my country [countrY]..........".

I want to convert all the characters inside square brackets [<value in upper or lower case>] to [<value in lowercase>].

example: [cIty] to [city]

How to do this in a efficient way with less code in java Or Groovy?

EDIT: I want to convert only the characters inside square brackets to lowercase not the other characters outside of square brackets.

Upvotes: 0

Views: 177

Answers (5)

tim_yates
tim_yates

Reputation: 171184

A shorter Groovy route is:

def text = "My name [name], my city [cIty], my country [countrY]."
text = text.replaceAll( /\[[^\]]+\]/ ) { it.toLowerCase() }

Upvotes: 2

Mikhail Kochegarov
Mikhail Kochegarov

Reputation: 334

import java.util.regex.*;


public class test {

public static void main(String[] args) {
    String str = "My name [name], my city [cIty], my country [countrY]..........";
    System.out.println(str);

    Pattern pattern = Pattern.compile("\\[([^\\]]*)\\]");
    Matcher matcher = pattern.matcher(str);

    while (matcher.find()) {
      str = str.substring(0,matcher.start()) + matcher.group().toLowerCase() + str.substring(matcher.end());
    }
    System.out.println(str);
}

}

Upvotes: 0

aiolos
aiolos

Reputation: 4697

Here is some groovy code that should do what you want:

def text = "My name [name], my city [cIty], my country [countrY]."
text.findAll(/\[(.*?)\]/).each{text = text.replace(it, it.toLowerCase())}

assert text == "My name [name], my city [city], my country [country]."

Upvotes: 1

anubhava
anubhava

Reputation: 786091

Here is the Java code that will do the job for you:

String str = "My name [Name], My city [cIty], My country [countrY].";
Matcher m = Pattern.compile("\\[[^]]+\\]").matcher(str);
StringBuffer buf = new StringBuffer();
while (m.find()) {
   String lc = m.group().toLowerCase();
   m.appendReplacement(buf, lc);
}
m.appendTail(buf);
System.out.printf("Lowercase String is: %s%n", buf.toString());

OUTPUT:

Lowercase String is: My name [name], My city [city], My country [country].

Upvotes: 4

aradhak
aradhak

Reputation: 836

Am not familiar with Groovy, but in Java, you can do that using string.toLowerCase()

Upvotes: 1

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