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Thread: strings

  1. #1
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    Default strings

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


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Strings

    Are you talking about the java SE String class? Look at the API doc for how to use the methods that you are asking about. If you have any questions about the doc, copy the text here and ask your questions about it.
    Last edited by Norm; September 21st, 2014 at 10:40 AM. Reason: Fix spelling
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Question strings are immutable ...iam little confused

    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

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    Default Re: strings

    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.

  5. #5
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    Default Re: strings

    Do you have a question?

  6. #6

    Default Re: strings

    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.

  7. #7
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    Default Re: 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());
    		}
     
    	}

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