Array Question

[Asad Kazmi]

Hi,

I am extracting my String (mytext) but it only repitedly displays "My" 6
times. While I want to extract all character on new line one by one.Like,

My
Name
Is
Asad
Raza
Kazmi

So can some one tell me where is the problem ?

Regards
Asad Kazmi
******************************************


public static void main(String[] args) {
String mytext="My Name is Asad Raza Kazmi";
int count=0;
int index=0;
char seperator=' '; //Determines the no of substrings
do
{
++count;
++index;
index=mytext.indexOf(seperator,index);
}
while(index != -1);
// Extract the substring into an array

String[] substr = new String[count]; // Allocate for Substring
index=0; // Substring Start index
int endindex = 0; // Substring endindex
for(int i=0; i<count; i++)
{
endindex=mytext.indexOf(seperator,index); //Find next
seperator
if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
}
index=endindex + 1;

// Display the Substring
for(int i=0; i < substr.length; i++)
System.out.println(substr);
}
}

 

[Superdude]

Asad Kazmi wrote:

Whew that is a long way to do it...

How come you couldn't do this?

String mytext="My Name is Asad Raza Kazmi";
StringTokenizer tokenizer = new StringTokenizer(mytext);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
System.out.println(token);
}

 

[Superdude]

But if you want to change it from

if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
}
index=endindex + 1;


to

if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
index=endindex + 1;
}

That'll work too.

 

[Roedy Green]

How come you couldn't do this?

String mytext="My Name is Asad Raza Kazmi";
StringTokenizer tokenizer = new StringTokenizer(mytext);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
System.out.println(token);
}

or in one line with Regex.split.

See http://mindprod.com/jgloss/regex.html

 

[Asad Kazmi]

Thankyou superdude
Regards
Asad kazmi

True.

 

[Superdude]

or in one line with Regex.split.

See http://mindprod.com/jgloss/regex.html

True.

 

[Stefan Waldmann]

Hi,

I am extracting my String (mytext) but it only repitedly displays "My" 6
times. While I want to extract all character on new line one by one.Like,

My
Name
Is
Asad
Raza
Kazmi

Hi,

the following code does just the thing you intend, and is a little bit
shorter ;-)
(works with Java 1.4 and higher)

String mytext="My Name is Asad Raza Kazmi";

// what you want to do, in 1 line:
String[] substr = mytext.split(" ");

// Display the Substring
for(int i=0; i < substr.length; i++)
System.out.println(substr);


Regards,
Stefan

 

[Asad Kazmi]

Hi, Roedy

When i complie with your codes it displays this error message.

java.lang.StringIndexOutOfBoundsException: String index out of range: -22
at java.lang.String.substring(String.java:1444)
at asad.SearchText.main(SearchText.java:45)
Exception in thread "main"

And which class in included for StringTokenizer ?

But if you want to change it from

*************************
Mine Codes
*************************

if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
}
index=endindex + 1;


to

************************
Yours Codes
************************

if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
index=endindex + 1;
}

That'll work too.

 

[Roedy Green]

When i complie with your codes it displays this error message.

What code are you referring to?

 

[Asad Kazmi]

Hi,
you ammended this part and put index=endindex+1 inside closing braces while
i put this statement out of braces. so i was refering this as your code.

Regards
Asad

if(endindex = =1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
index=endindex + 1;
}

 

[Roedy Green]

you ammended this part and put index=endindex+1 inside closing braces while
i put this statement out of braces. so i was refering this as your code.

Regards
Asad

I see the problem. Superdude made that mod, not me.

 

[Superdude]

Yep,

public static void main(String[] args) {
String mytext="My Name is Asad Raza Kazmi";

int count=0;
int index=0;
char seperator=' '; //Determines the no of substrings
do {
++count;
++index;
index=mytext.indexOf(seperator,index);
}
while(index != -1);
// Extract the substring into an array

String[] substr = new String[count]; // Allocate for Substring
index=0; // Substring Start index
int endindex = 0; // Substring endindex
for(int i=0; i<count; i++) {
endindex=mytext.indexOf(seperator,index); //Find next
//seperator
if(endindex == -1)
substr=mytext.substring(index);
else
substr=mytext.substring(index,endindex);
index=endindex + 1;
}


// Display the Substring
for(int i=0; i < substr.length; i++)
System.out.println(substr);
}


Worked fine.