How to capitalize first letter of every sentence in J2ME?

[SHENGTON]

Hello, good morning.

How to capitalize first letter of every sentence in J2ME?

I want to capitalizes the first letter found after either a period, question mark or exclamation point.

For example: If this is the sentence --> where are you now? please be here this afternoon.

The output should be --> Where are you now? Please be here this afternoon.

I tried this code:

temp = temp.substring(0,1).toUpperCase()+temp.substring(1);

But the output is like this --> Where are you now? please be here this afternoon.

[bhanuchandar.k]

Hi SHENGTON,

I have pust some dummy implementation of how to capitalize the first letter you can custamize this according to your needs. I assumes your input string is a lower case string.

char[] charArr = str.toChar();
StringBuffer result = new StringBuffer();
for(int i = 0;i<charArr.lenght;i++)
{
char ch = charArr[i];
prevCh = i==0?0:charArr[i-1];
switch(prevCh){
case '?':
case '.':
case '!':
result.append(Character.toUpperCase(ch));
break;
default:
result.append(ch);
break;
}
}

[SHENGTON]

What's the meaning of this line bhanuchandar.k?

prevCh = i==0?0:charArr[i-1];

[danhicksbyron]

First year C: If i == 0, return 0, otherwise return the char prior to the ith char.

[bhanuchandar.k]

Hi SHENGTON,

The logic is depending on the previous character . At the beginning of the loop the previous character will not be there to handle that condition I have added that.

[im2amit]

This could also be done by starting the loop from 1-

for(int i = 1;i<charArr.lenght;i++)
{
char ch = charArr[i];
prevCh = charArr[i-1];
....
.
..

.
.
.
}

[petrib]

The generic/right tool for this kind of things is: regular expressions.

http://oreilly.com/catalog/9780596528126/

[SHENGTON]

Hello, good evening.

@bhanuchandar.k
Thanks for the brief explaination.

@im2amit and petrib
Thanks for helping me as well.

@ to all
I use this code to capitalize the first letter of every sentence.

  public static String capitalize(String str)
  {
      char[] arr = str.toCharArray();
      boolean cap = true;
      boolean spacefound = true;
      for (int i = 0; i < arr.length; i++)
      {
          if (cap)
          {
              if (arr[i] == ' ')
              {
                  spacefound = true;
              }
              else
              {
                  if (spacefound && !Character.isUpperCase(arr[i]))
                  {
                      arr[i] = Character.toUpperCase(arr[i]);
                      cap = false;
                      spacefound = false;
                  }
              }
          }
          else
          {
              if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!')
              {
                  cap = true;
              }
          }
      }
      return new String(arr);
  }

But if I will send the message twice, the result would be this --> YOu are so nice. WHere do you live? WHat is ur name?

It should be "You are so nice. Where do you live? What is ur name?" even if I'll send it twice or more. What's lacking with the code?


Here's my code in the send command, I just copy the part where the string should be capitalize:

              capital = capitalize(temp);
              message = new TextBox ("Message", capital, 2000,TextField.ANY);

[SHENGTON]

Ok I figured it out. Here's the perfect code:

  public static String capitalize(String str)
  {
      char[] arr = str.toCharArray();
      boolean cap = true;
      boolean spacefound = true;
      for (int i = 0; i < arr.length; i++)
      {
          if (cap)
          {
              if (arr[i] == ' ')
              {
                  spacefound = true;
              }
              else
              {
                  if (spacefound && !Character.isUpperCase(arr[i]))
                  {
                      arr[i] = Character.toUpperCase(arr[i]);
                  }
                  cap = false;
                  spacefound = false;
              }
          }
          else
          {
              if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!')
              {
                  cap = true;
              }
          }
      }
      return new String(arr);
  }

Thank youso much guys for helping me. You guys are great.

[bhanuchandar.k]

Hi SHENGTON ,

This also works fine.
Code:

public static String capitalize(String str) {
char[] arr = str.toCharArray();
for (int i = 0; i < arr.length; i++) {
char ch = arr[i];
char prevChar = (i == 0 ? 0 : arr[i - 1]);
switch (prevChar) {
case ' ':
case '?':
case '.':
case '!':
arr[i] = Character.isUpperCase(ch) ? ch : Character.toUpperCase(ch);
break;

}
}
return new String(arr);
}

[SHENGTON]

Thanks bhanuchandar.k, I'll try that.

[danhicksbyron]

Here's the perfect code:

Far from it! You also need a dictionary to recognize acronyms and proper names, capitalized the stand-alone "I", etc. Had the thing written in REXX once, many moons ago. For English there are a few simple rules that can recognize 90% of acronyms (but unfortunately would be befuddled by "fone speak").