How to modify this String in Java?

Question

Suppose I am having two Strings as follows :

String name = "EXAMPLE_MODEL_1";
String actionName = "ListModels";

I want resulting string as Follows :

String result = "ExampleModel1ListModels";

I tried the Follwoing code :

String result = name.toLowerCase().replaceAll("_", "");
result = result.concat(actioName);

And I am getting the result value as "examplemodel1ListModels". But the exepected one is "ExampleModel1ListModels".

I dont understand ur Q,ur getting what u expected ,please correct typos if u have any — Balaswamy Vaddeman
– Balaswamy Vaddeman, Commented Jan 25, 2012 at 4:50
I could be wrong, but if I understand this correctly toLowerCase should convert result to lower case. Wouldn't that explain why you're not getting the original capitalized results? — Joel Cornett
– Joel Cornett, Commented Jan 25, 2012 at 4:50
it is edited by @lucifer there was a typo Example was Examole — Balaswamy Vaddeman
– Balaswamy Vaddeman, Commented Jan 25, 2012 at 4:52
because that was typing mistake in her question which none of you marked. — Lucifer
– Lucifer, Commented Jan 25, 2012 at 4:54

Community · Accepted Answer · 2017-05-23 12:27:29Z

2

The name string needs to have the underscores replaced -- you've done that. Before you do that, you need to convert it to title case.

After that, simply concatenate the two strings.

edited May 23, 2017 at 12:27

CommunityBot

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answered Jan 25, 2012 at 4:49

Cᴏʀʏ

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Community · Accepted Answer · 2017-05-23 11:56:38Z

1

Combine your partial solution, with the function described here:

What is the simplest way to convert a Java string from all caps (words separated by underscores) to CamelCase (no word separators)?

edited May 23, 2017 at 11:56

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answered Jan 25, 2012 at 4:50

Oleksi

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gprathour · Accepted Answer · 2012-01-25 04:49:36Z

1

You are using toLowerCase() method so you are getting result like that. Don't use this function.

answered Jan 25, 2012 at 4:49

gprathour

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2 Comments

Beginner Over a year ago

Then which function to be used ?

gprathour Over a year ago

@Beginner you need to find some function to convert your String to Title Case rather than Lower Case.

Prince John Wesley · Accepted Answer · 2012-01-25 04:54:11Z

1

Use Apache's WordUtil.Capitalize Method.

answered Jan 25, 2012 at 4:54

Prince John Wesley

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Jigar Joshi · Accepted Answer · 2012-01-25 04:51:53Z

0

Use Guava's CaseFormat

String result = LOWER_UNDERSCORE.to(UPPER_CAMEL, "EXAMPLE_MODEL_1") + "ListModels";

answered Jan 25, 2012 at 4:51

Jigar Joshi

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Aravind Yarram · Accepted Answer · 2012-01-25 04:53:46Z

0

Apache commons-lang has utility classes that can help you. Below is my idea

convert name to small case
Use String capitalizeFully(String str, char[] delimiters) with delimiter as _
Remove spaces out of result from step 1
concatenate both

answered Jan 25, 2012 at 4:53

Aravind Yarram

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Ramkumar Murugadoss · Accepted Answer · 2012-01-25 04:59:16Z

Try to use the following code (I'm editing and paste the full code)

import java.io.IOException;
public class StringTest{

    public static void main(String[] arg) throws IOException{
        String name = "EXAMPLE_MODEL_1"; String actionName = "ListModels";
        String result = toProperCase(name.toLowerCase().replaceAll("_", " "))+actionName;
        result= result.replaceAll(" ","");
        System.out.println(result);

    }
    public static String toProperCase(String theString) throws java.io.IOException{
        java.io.StringReader in = new java.io.StringReader(theString.toLowerCase());
         boolean precededBySpace = true;
         StringBuffer properCase = new StringBuffer();    
             while(true) {      
            int i = in.read();
              if (i == -1)  break;      
                char c = (char)i;
                if (c == ' ' || c == '"' || c == '(' || c == '.' || c == '/' || c == '\\' || c == ',') {
                  properCase.append(c);
                  precededBySpace = true;
               } else {
                  if (precededBySpace) { 
                 properCase.append(Character.toUpperCase(c));
               } else { 
                     properCase.append(c); 
               }
               precededBySpace = false;
            }
            }

        return properCase.toString();    

    }
}

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