Thread: strings

strings are immutable in java...so can we apply toupper nd tolower function directly in a string

import static java.lang.System.*;
import java.util.Scanner;

class StringTest3
{
public static void main(String args[])
{
String str = "Unisoft Technologies"; //immutable
out.println(str);

String temp;

temp = str.replace("soft","hardware");
out.println(temp);

temp = str.toUpperCase();
out.println(temp);

temp = str.toLowerCase();
out.println(temp);

temp = str.concat(", Dehradun");
out.println(temp);
}
}





i want to know,if strings are immutable in java,so how i become able to change the given string into uppercase,lowercase,even iam able to concatenate it with other string

Threads merged.

Please don't start multiple threads on the same topic.

You should also know how to post your code using code or highlight tags as explained near the top of this topic. If you need help with that, PM me.

Do you have a question?

Strings, which are widely used in Java programming, are a sequence of characters. In Java programming language, strings are treated as objects. The Java platform provides the String class to create and manipulate strings.

I'm not quite sure I understand your question but to me it looks like you're asking if we can modify a String to its lowercase or uppercase variant in which case the answer is yes:

	public class UpperAndLower {
 
		public static void main(String[] args) {
			String lower = "LowEr";
			String upper = "uPPeR";
			System.out.println(lower.toLowerCase() + " - " + upper.toUpperCase());
		}
 
	}