[java] general object questions

[mickey]

Hello,

I'm writing a program. It must read many files and for each he must split their content in tokens ( the blank space is the delimiter). Now I think to use scanner Object to work on this; and I'm wondering about the file reading: what better? I suppose doens't make sense to read every file into a block and then Scanner it !? Or it's better open a file, read a file, scanner a single line and go on till the end of the file (this for all file);
Then I must work on the tokens of all files: so I think to put every tokens in a Vector.
Furthermore, How do you implement it ? I mean:I suppose to have something like:

class FileToText {
	static public String readString file){
		StringBuilder sb = new StringBuilder();										
			try {
				BufferedReader in = new BufferedReader(new FileReader(new File(file) ));				
				try {
					String s = null;
					while (( s = in.readLine()) != null) {
						sb.append(s);
					}
 
				} finally { in.close(); }
			} catch (IOException e) {
				System.out.println("file not found");
				System.exit(-1);
			}		
	return sb.toString();
	}
}
//main 
Scanner scanner = new Scanner ( TextFile.read( "file.txt") );

class FileToText {
	static public String readString file){
		StringBuilder sb = new StringBuilder();										
			try {
				BufferedReader in = new BufferedReader(new FileReader(new File(file) ));				
				try {
					String s = null;
					while (( s = in.readLine()) != null) {
						sb.append(s);
					}
					
				} finally { in.close(); }
			} catch (IOException e) {
				System.out.println("file not found");
				System.exit(-1);
			}		
	return sb.toString();
	}
}
//main 
Scanner scanner = new Scanner ( TextFile.read( "file.txt") );

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Maybe it doesn't make sense read line by line and after scanner it....How do you do this, please?

thanks,