passing value of string from one to another file

[deepika deepi]

Hi all,

Good evening. I have done a coding to perform a string to be called from one file to another. Here i am trying to use the string template_no and the result of template_no should be displayed in the Foo program. i tried to get all the values existing in the template_no. But i am getting only the last value in template_no. How to get all the values of the template_no?

import java.io.*;

import java.lang.*;

import java.util.regex.*;

import java.util.*;
import java.util.Arrays;
import java.util.List;
import java.util.Iterator;
class Send {
public String paint(String template_no){
//public void Sendfile()
	{
      try{

		
		// Open the file that is the first 
		// command line parameter
		FileInputStream fstream = new FileInputStream("sendfile.txt");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
	//	String sentence;
		String  s;
		//Read File Line By Line
		while (( s = br.readLine()) != null) 	
{


		String[] splitResult =  s.split("\t");	
		  templateno = splitResult[0]; //\\ Mr
		String  rule = splitResult[1];
	 	//return templateno;
System.out.println(templateno);

		//End of coding
}
in.close();

		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}return templateno;
} 
}
//}
//
 class Checkprogram {
    public static void main(String[] args)	{

      try{



		FileInputStream fstream = new FileInputStream("Rule-example.txt");

		// Get the object of DataInputStream

		DataInputStream in = new DataInputStream(fstream);

        BufferedReader br = new BufferedReader(new InputStreamReader(in));

		String  s;

//		StringBuilder sb=new StringBuilder();

Send send = new Send();
//Send[] send = new Send[];
String templateno = "";


System.out.println("Print all the numbers: " + send.paint(templateno));
      //Foo.Sendfile();


		//Read File Line By Line





		while (( s = br.readLine()) != null) 	

{
//String se = template_no;

//System.out.println(template_no); // here i need to get the output without changing the text file 



		String[] splitResult = s.split(":");	

		String rule_no = splitResult[0]; 

		String rule = splitResult[1];

//		System.out.println(rule_no);





		//End of coding

}

in.close();



		}catch (Exception e){//Catch exception if any

//			System.err.println("Error: " + e.getMessage());

		}

	}

}
//}

input file
send file.txt

001 Apple
001 mango
002 Pappaya
003 Jackfruit
003 orange
004 gauva
005 pineapple
006 stawbery

can any one help me.How to proceed. I am not able to proceed further. Help me..

[Winston Gutkowski]

deepika deepi wrote:I have done a coding to perform a string to be called from one file to another. Here i am trying to use the string template_no and the result of template_no should be displayed in the Foo program. i tried to get all the values existing in the template_no. But i am getting only the last value in template_no. How to get all the values of the template_no?

Deepika, I strongly urge you to stop coding and think about what you're doing.

For one thing, it'll help you to explain it to us better, because right now I have no idea what you want. All I see is a pile of code with two methods that appear to be doing almost exactly the same thing.

I think it's already been suggested on one of your other threads, but give your classes and fields meaningful names. It'll help us (and I suspect you) a LOT.

Right now, we're having plough through a lot of code with classes named Foo (not to mention a method called paint() that reads a file and returns a String (???)); and it gives us absolutely no context to work with.

What I see is the coding equivalent of flailing arms and machine-gun questions; and it's NOT the way to learn a language like Java.

Winston

[deepika deepi]

Sorry Winston Gutkowski. Sorry for not giving clear explanation. I have two different class files. I want the result of one file to be called in the other file. That what is the requirement. In this i have taken template_no. i want that result to be displayed inside the other file. Am i clear now? I am trying to explain as my level best.

not to mention a method called paint()

i have searched in google for passing string from one to other from this link

http://stackoverflow.com/questions/3840438/java-passing-strings-from-one-class-to-another

So i have used that. IF i am wrong guide me. I have no idea how to do. what method should be called ? if i am not clear i am sorry. I am trying my level best to tell what i want.

is it possible to use hash function to get the result of one class output inside other class file?

[Campbell Ritchie]

I am not convinced you have understood Winston’s suggestion. The reason you are trying so hard to explain what you want and not succeeding is that you have not yet worked out what you want. That stackoverflow link probably does more to confuse you than help you.

Don’t use DataInputStreams for text files. Use a BufferedReader, as you will find in the Java Tutorials.
Your handling of the inappropriately named parameter template_no is simply wrong. Also please indent your code correctly. If you have two } above each other, you must have indented a } incorrectly somewhere earlier.

[Winston Gutkowski]

deepika deepi wrote:Sorry for not giving clear explanation...

No need to apologise, it's a common beginner's mistake; but I hope you take the advice (and Campbell explained it even better than me).

Programming is NOT about coding, it's about thinking; and in order to solve a problem you must first understand exactly what it is.
And in order to do that you must be able to describe the requirements in full.

My suggestion:
1. Get a copy of the problem description as it was given to you.
2. TURN YOUR COMPUTER OFF.
3. Sit down and write out, in your own words, exactly what the description is asking you to do.

When you've done that, come back here and show us (a) the original problem description and (b) your interpretation of it. And do it before you write another line of code.

That will give us a basis to start helping you.

Winston

[deepika deepi]

ya,
i will follow it ..

[deepika deepi]

Campbell Ritchie

I am able to say what i want. But i am not able to do it programming wise. i feel difficult. i want to call a string from one method to another. i searched in google and get some results. and tried with that. But still i have no idea to proceed. How to do that? am i wrong . In perl they use sub followed but that file name and get the result by suing an hash and for loop function.In java how to do i have no idea. please if you know tell some good links there to use like that ?

[Winston Gutkowski]

deepika deepi wrote:I am able to say what i want. But i am not able to do it programming wise. i feel difficult. i want to call a string from one method to another.

But that's the point: we don't understand what you mean by "I want to call a string from one method to another".
Do you mean you want to pass a String from one method to another? In which case, why is there a File involved?

i searched in google and get some results. and tried with that. But still i have no idea to proceed. How to do that? am i wrong . In perl they use sub followed but that file name and get the result by suing an hash and for loop function.

I'm afraid my perl isn't that great, but what you describe in this paragraph is NOT what you described above.

You must be clear when you're trying to describe a problem to other people. It appears that you want to read a String from a File, and pass it to another method; is that right?

What String (or Strings) do you want to read? Each line? A part of a line? The whole File? Any one of those things could be put into a String object, but unless you explain exactly what you want, we can't help you.

Winston

[deepika deepi]

Winston Gutkowski
Do you mean you want to pass a String from one method to another? In which case, why is there a File involved?

ya i want to pass the string from one method to another. If i am correct it would be exactly the results of templateno (it consists of many values so i think it can be called as array.If you see the input you can tell whether i am right Eg:001 001 002 etc )sorted in one file to be called in the main file Check. So i have used files here.

It appears that you want to read a String from a File, and pass it to another method; is that right?

ya right.

What String (or Strings) do you want to read? Each line? A part of a line? The whole File?

ya the part of file that declared by string named templateno. that output i want to pass in the other file.

Any one of those things could be put into a String object

i have put a string object Send send = new Send();

in the line number 35 i am getting the output of templateno. that one i am trying to pass it to another class and i want the result to be displayed in that class.

[Campbell Ritchie]

Do you mean you want to pass a String to the Send class’ constructor? Can it take a String? Do you want a String, or a number? Is 123 different from 00123?
You need to work out the answer to all that sort of question. And when you have those answers, you will probably be surprised by how easy it is to implement the code!

[Winston Gutkowski]

deepika deepi wrote:ya i want to pass the string from one method to another. If i am correct it would be exactly the results of templateno (it consists of many values so i think it can be called as array.

Or a List<String> (probably easier).

Right, so you want to do the following:
1. Read in each line of sendfile.txt.
2. Split the line into two parts: the number, and whatever comes after it.

Questions: What is the delimiter? Is it a space? Can there be more than one?

3. You want your method (and please don't call it print()) to return a list of ALL the numbers in the file (ie, 1 for each line).

NOTE: If that's the case, then you method declaration is WRONG. You should be returning a String[] or a List<String>; I suggest the latter.

4. ???

And that's where you lose me still. What exactly do you want to do with these numbers? What is CheckProgram supposed to do? What is a Send object? From the look of it to me, one or other of them is redundant unless, as Campbell asked: Do you want one Send object for each line?

BTW: The above is exactly what YOU need to be doing: Writing down each step IN DETAIL. And you really must give your classes and methods proper names, because the ones you have at the moment are incredibly confusing.

Stop thinking about the code, and try and describe THE PROBLEM; and describe it as though the person you're talking to has never heard of Java.

Winston

[deepika deepi]

hi all,

Happy week end. Thank's for your replies. i have made some changes in the code and Hope i could explain in clear manner than before.

import java.io.*;
import java.lang.*;
import java.util.regex.*;
import java.util.*;
import java.util.Arrays;
import java.util.List;
import java.util.Iterator;
 class CheckProgram {
    public static void main(String[] args)	{
      try{

		FileInputStream fstream = new FileInputStream("Rule-example.txt");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
		String  s;
Send();
Input();
		//Read File Line By Line

		while (( s = br.readLine()) != null) 	
{
		String[] splitResult = s.split(":");	
		String rule_no = splitResult[0]; 
		String rule = splitResult[1];
//		System.out.println(rule_no);

}
in.close();

		}catch (Exception e){//Catch exception if any
//			System.err.println("Error: " + e.getMessage());
		}
	}
//new class
static void Send(){
      try{

		
		// Open the file that is the first 
		// command line parameter
		FileInputStream fstream = new FileInputStream("sendfile.txt");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
	//	String sentence;
		String  s;
		//Read File Line By Line
		while (( s = br.readLine()) != null) 	
{


		String[] splitResult =  s.split("\t");	
		String templateno = splitResult[0]; //\\ Mr
		String  rule = splitResult[1];
//System.out.println(rule);
//declare the char array
   char[] stringArray;
//convert string into array using toCharArray() method of string class
    stringArray = rule.toCharArray();
    //display the array
    for(int index=0; index < stringArray.length; index++)

      System.out.print(stringArray[index]);
System.out.println("");

		//End of coding
}
in.close();

		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
//input
static void Input(){
      try{

		// Open the file that is the first 
		// command line parameter
		FileInputStream fstream = new FileInputStream("Input.txt");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));

		String  s;
		//Read File Line By Line
		while (( s = br.readLine()) != null) 	
{
		
		System.out.println(s);

}
in.close();

		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
//End of class in next line
}

i have changed the string to array in static void Send() . Is it possible to declare it above and use it in the static void Input(). If so. how to do that. Kindly help me.

In this code CheckProgram is the class name and where main is declared. static void Send() is having a String called rule. next i have a static void Input() the rule from the code of this line

String  rule = splitResult[1];
System.out.println(rule);

should be used to check whether the match occurs in the Input.txt.In this rule is the key word for matching. The rule has fruits name. the input is in form of sentences. If the Input matches the rule. It should display only that result in the static void Input(). that what i need to do. I hope i am little clear in telling my requirements. Now help me hoe to pass the rule to the Input and check whether match occurs.

send.txt contains
001 Apple
001 mango
002 Pappaya
003 Jackfruit
003 orange
004 gauva
005 pineapple
006 stawbery

Input.txt contains
In the section of the description is given about fruits.
Apple is good for health than Mango.
plums fruit is available in only certain months in the year.