How To Read From Text File Using HashMap For Category And Descriptors

Oct 28, 2014

I have a TxT file with the next content:

[Cars]
BMW=3
Lamborghini=10
[Computers]
Mouse=5
Keyboard=12

How can i read the file and output in

System.out.println("Category " + descriptor + " Value: " + )

The output console should look like :

Cars : Lamborghini 10
BMW 3
Computers: Mouse 5
Keyboard 12

And the Value MUST be readed from thext file for each descriptor.

package test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Objects;
import java.util.Map;
public class Descriptor {
private final String descriptor;

[Code] ....

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I'm trying to get a file read into a HashMap and I keep getting ArrayIndexOutOfBounds Exception. This is a part of the file I'm reading in:

a あ
e え
i い
o お
u う

Java is unicode based. I'm new to using HashMaps and I/O HashMap<String, String> hm = new HashMap <String, String>();

try {
in = new BufferedReader(new FileReader("hirigana.txt"));
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System.out.println("failed to find hirigana");

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Dec 12, 2014

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what i did:.

01. I wrote code that read the text file and output in to jave console/ also some of the interface.

the code read txt file:

Java Code:

String fileName = "C:/Users/lakshan/Desktop/lawyer.txt";
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[code]....

so it will read any text file dynamically and output to the text pane in interface. I think scanner code must be execute after the select the file from the browser and set the scanned result in to variable. then later out put the var as string in some jswing component?

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import java.io.*;
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Here is the base Product class that must be used to create the objects for the array.

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[Code] .....

And then here is the data from the text file that i must extract to use to create product objects.

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Jul 14, 2014

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[import java.io.File;
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I gather that I'll probably have to user the Scanner for the user to input the text file name, but how do I store it to an array? So far I only have the bones of the program done, like so

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public static void main(String[] args) {

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import java.io.BufferedWriter;
import java.io.File;
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Oct 22, 2014

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Mar 9, 2014

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3623161
3666669
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Example of output:
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3666669
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3594955
3289867
2493998
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import java.util.Scanner;
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[code]....

EX.
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try( BufferedReader br = new BufferedReader( new FileReader( jFileChooser1.getSelectedFile().getAbsolutePath() ) ) ) {
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Java Code:

import java.io.FileNotFoundException;
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Mar 26, 2014

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10
150.4
88.4
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1299.8
0
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901.7
4444.4

This is what my program looks like

import java.util.*;
import java.io.*;
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  Toolkit_General toolKit = new Toolkit_General();
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[Code] .....

so I dont get an error but this is what my output looks like

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import java.io.FileNotFoundException;
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import java.util.Scanner;
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Dec 9, 2011

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import java.io.File;
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