How to read characters from a string ?

Hi,
In my java program I accepted string from the user and now I want to calculate the length of the string, and then read characters one by one to encrypt it.
How to read the characters one by one ? Like Mid$ function in VB.
Small code to illustrate will be appreciated.

Hi,
Pick one!
public class A
public static void pokeAtString( String s )
    for( int i = 0; i < s.length(); ++i )
      System.out.print( s.charAt( i ) );
public static void useCharArray( String s )
    char[] c = s.toCharArray();
    for( int i = 0; i < c.length; ++i )
      System.out.print( c[i] );
public static void main( String[] args )
    String s = "Once was a good man.";
    System.out.print( "PokeAtString: " );
    pokeAtString( s );
    System.out.print( "\nuseCharArray: " );
    useCharArray( s );
    System.out.println( "" );
}Enjoy,
Manfred.

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How to read characters from a text file in java program ?

Sir,
I have to read the characters m to z listed in a text file .
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Thanking you,
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Hai,
The requirement is like this
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n 227,128,134 #Half width katakana letter small n
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q 227,129,131
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s 227,129,133
t 227,129,134
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v 227,129,136
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x 227,129,138
y 227,129,139
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On encountering any character between m to z, i have to do a replacement with a hexadecimal code point value for the multibyte representation in the second column in the input file.
I have the code to get the unicode codepoint value from the multibyte representation, but not from a file.
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Removing characters from a String (concats, substrings, etc)

This has got me pretty stumped.
I'm creating a class which takes in a string and then returns the string without vowels and without even numbers. Vowels and even characters are considered "invalid." As an example:
Input: "hello 123"
Output: "hll 13"
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Within my class, I have various methods set up, one of which determines if a particular character is "valid" or not, and it is working fine. My problem is that I can't figure out how to essentially "erase" the invalid characters from the string. I have been trying to work with substrings and the concat method, but I can't seem to get it to do what I want. I either get an OutOfBoundsException throw, or I get a cut-up string that just isn't quite right. One time I got the method to work with "hello" (it returned "hll") but when I modified the string the method stopped working again.
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Thansk for the suggestions so far, but i'm not sure how to implement some of them into my program. I probably wasn't specific enough about what all I have.
I have two classes. One is NoVowelNoEven which contains the code for handling the string. The other is simply a test class, which has my main() method, used for running the program.
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//data fields
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                         valid = sub1.concat(sub2);
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}So in my test class i'd have something like this:
public class test {
public static void main(String[] args){
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}

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Read characters from console.

Hii
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I want to read each char that user press on line and without waiting for the Enter button. It's like an keyboard event but there is no GUI.
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I don't understund what you really want to do.it is possible mesure the time between each char type using the last code :
char charPressed='\0';
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try
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Guys,
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Nitin_tiwari wrote:
I have a string which has Chinese as well as Japanese characters, and I only want to remove only Chinese characters.
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Hello Experts,
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Or even without a loop ?
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Extract from the for the advanced search options :
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Message Edité par JB le 05-06-2008 01:49 PM
Attachments:
Example_VI_BD4.png ‏2 KB

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How to read characters from a string ?

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