https://github.com/afa-farkhod/csv-vector-search-java-api

CSV & Vector-Search Java API
https://github.com/afa-farkhod/csv-vector-search-java-api

csv-reader java vector-search

Last synced: 2 months ago
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CSV & Vector-Search Java API

• Host: GitHub
• URL: https://github.com/afa-farkhod/csv-vector-search-java-api
• Owner: afa-farkhod
• License: mit
• Created: 2023-04-23T08:30:20.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2023-07-02T00:48:59.000Z (over 2 years ago)
• Last Synced: 2025-10-09T18:33:11.517Z (2 months ago)
• Topics: csv-reader, java, vector-search
• Language: Java
• Homepage:
• Size: 42 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Java-CSV-API

- CSV sample program is implemented inside the `CSV_Read_Sample` folder

- The Java program that reads a `*.csv` file and displays its contents in a tabular format.

## CSV (Comma Separated Values) sample Java api

- Java program reads a `*.csv` file and prints its contents to the console. It utilizes Java's standard I/O classes to perform file operations and exception handling to handle potential errors.

- Sample data: `testData.csv`



  



- Java api reads the file then outputs the data 



  



- `CSV_Read_Sample.java` explanation:

  - The code declares a class named Test within the package org.example.

  - The main method serves as the entry point of the program.

  - The code defines a file path variable (file) that points to the location of the CSV file to be read.

  - It initializes a BufferedReader object (reader) as null. This object will be used to read the file.

  - Inside a try block, the code creates a BufferedReader by passing a FileReader object (initialized with the file path) to it. This establishes a connection to the file for reading.

  - The code enters a loop that reads each line of the file using reader.readLine() until the end of the file is reached (i.e., the returned line is null).

  - Within the loop, each line is split into an array of strings using a comma (,) as the delimiter. The resulting array is stored in the row variable.

  - Another loop iterates over each element in the row array and prints it to the console using System.out.printf(). The %-20s formatting ensures left alignment and a minimum width of 20 characters for each printed value.

  - After printing all values in a row, a newline character is printed using System.out.println() to move to the next line.

  - If an exception occurs during file reading or printing, it is caught in the catch block, and the exception stack trace is printed to the console using e.printStackTrace().

  - Finally, the finally block ensures that the BufferedReader object is properly closed using the close() method. If an exception occurs while closing the reader, a RuntimeException is thrown with the original exception as its cause.

-------------------------------------

# [Vector-Search](https://en.wikipedia.org/wiki/Vector_space_model)

- Vector Search program is implemented in the following folder: `Vector_Search_Sample` 

- The Java program that allows the user to search for a keyword in a `*.csv file`. The program prompts the user to enter a keyword, reads the input, and then opens a CSV file specified by the file path. It reads the file line by line and checks if each line contains the keyword. If a match is found, it prints the row index and the entire line. Finally, it closes the file and handles any exceptions that may occur during the file reading process.

- Overall, this code demonstrates a simple file handling operation in Java, where a *.csv file is read, and a keyword search is performed on its contents.

## Vector Search Sample

- Java code allows the user to search for a keyword within a CSV file. It utilizes Java's standard I/O classes, exception handling, and user input functionality to achieve this task.

- Test Data is NationalUniversitiesRankings.csv



  



- Java API reads the file then searchs for the particular keyword



  



- `Vector Search` is implemented in the below lines (This loop is performing the vector search by comparing each element in the row to the keyword entered by the user. If a match is found, it prints the entire row where the keyword was found.):



  



- `Vector_Search_Sample.java` code explanation:

  - Code starts by importing necessary classes for file handling, exception handling, and user input.

  - The code declares a class named Test within the package `org.example.`

  - The main method serves as the entry point of the program.

  - The code defines a file path variable (file) that points to the location of the CSV file to be read.

  - It initializes a `BufferedReader` object (reader) as null. This object will be used to read the file.

  - It declares a string variable (line) to store each line read from the file.

  - It declares an integer variable (`rowIndex`) to keep track of the current row being read.

  - It initializes a Scanner object (input) to receive user input from the console.

  - The code prompts the user to enter a keyword to search within the CSV file using `System.out.print()`.

  - It reads the user's input (keyword) using `input.nextLine()` and stores it in a string variable (keyword).

  - Inside a try block, the code creates a `BufferedReader` by passing a `FileReader` object (initialized with the file path) to it. This establishes a connection to the file for reading.

  - The code enters a loop that reads each line of the file using `reader.readLine()` until the end of the file is reached (i.e., the returned line is null).

  - Within the loop, each line is split into an array of strings using a comma (,) as the delimiter. The resulting array is stored in the row variable.

  - Another loop iterates over each element in the row array and checks if the current element contains the keyword entered by the user using `index.contains(keyword)`.

  - If a match is found, the code prints the row index (`rowIndex`) and the entire line where the keyword was found using `System.out.println()`.

  - After processing each line, the rowIndex is incremented.

  - If an exception occurs during file reading, searching, or printing, it is caught in the catch block, and the exception stack trace is printed to the console using `e.printStackTrace()`.

  - Finally, the finally block ensures that the BufferedReader object is properly closed using the close() method. If an exception occurs while closing the reader, a `RuntimeException` is thrown with the original exception as its cause.