Package io.github.astrapi69.file.read

Class ReadFileExtensions

  • public final class ReadFileExtensions
extends java.lang.Object
    The class ReadFileExtensions helps you reading files.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static long countAllLines​(java.io.File fileToCountTheLines)
      Count all lines from the given file
      static java.lang.Byte[] getFilecontentAsByteObjectArray​(java.io.File tmpFile)
      Get a Byte array from the given file.
      static java.lang.String inputStream2String​(java.io.InputStream inputStream)
      The Method inputStream2String() reads the data from the InputStream into a String.
      static java.lang.String inputStream2String​(java.io.InputStream inputStream, java.nio.charset.Charset encoding)
      The Method inputStream2String() reads the data from the InputStream into a String.
      static java.io.Reader openFileReader​(java.lang.String fileName)
      The Method openFileReader() opens a BufferedReader from the given file.
      static java.lang.String reader2String​(java.io.Reader reader)
      The Method reader2String() reads the data from the Reader into a String.

      Note: Reader will not be closed.
      static byte[] readFileToBytearray​(java.io.File file)
      Get a byte array from the given file.
      static java.lang.String readFromFile​(java.io.File file)
      The Method readFromFile() reads the filecontent to a String.
      static java.lang.String readFromFile​(java.io.File file, java.nio.charset.Charset encoding)
      Read from file.
      static java.lang.String readHeadLine​(java.lang.String inputFile)
      The Method readHeadLine() opens the File and reads the first line from the file.
      static java.util.List<java.lang.String> readLinesInList​(java.io.File input)
      Reads every line from the File and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.File input, boolean trim)
      Reads every line from the File and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.File input, java.nio.charset.Charset encoding)
      Reads every line from the File and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.File input, java.nio.charset.Charset encoding, boolean trim)
      Reads every line from the File and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input)
      Reads every line from the given InputStream and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input, boolean trim)
      Reads every line from the given InputStream and puts them to the List.
      static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input, java.nio.charset.Charset encoding, boolean trim)
      Reads every line from the given InputStream and puts them to the List.
      static java.util.Properties readPropertiesFromFile​(java.lang.String filename)
      The Method readFromFile(String) reads from the properties-file all Properties and saves them into a Properties-Object.
      static byte[] toByteArray​(java.io.File tmpFile)
      Get a byte array from the given file.
      static byte[] toByteArray​(java.io.InputStream input)
      Get a byte array from the given InputStream.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • getFilecontentAsByteObjectArray

        public static java.lang.Byte[] getFilecontentAsByteObjectArray​(java.io.File tmpFile)
                                                        throws java.io.IOException
        Get a Byte array from the given file.
        Parameters:
        tmpFile - the tmp file
        Returns:
        the filecontent as Byte array object.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • inputStream2String

        public static java.lang.String inputStream2String​(java.io.InputStream inputStream)
                                           throws java.io.IOException
        The Method inputStream2String() reads the data from the InputStream into a String.
        Parameters:
        inputStream - The InputStream from where we read.
        Returns:
        The String that we read from the InputStream.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • inputStream2String

        public static java.lang.String inputStream2String​(java.io.InputStream inputStream,
                                                  java.nio.charset.Charset encoding)
                                           throws java.io.IOException
        The Method inputStream2String() reads the data from the InputStream into a String.
        Parameters:
        inputStream - The InputStream from where we read.
        encoding - the encoding
        Returns:
        The String that we read from the InputStream.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • openFileReader

        public static java.io.Reader openFileReader​(java.lang.String fileName)
                                     throws java.io.IOException
        The Method openFileReader() opens a BufferedReader from the given file.
        Parameters:
        fileName - The file from where to read.
        Returns:
        The opened BufferedReader from the specified file.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • reader2String

        public static java.lang.String reader2String​(java.io.Reader reader)
                                      throws java.io.IOException
        The Method reader2String() reads the data from the Reader into a String.

        Note: Reader will not be closed.
        Parameters:
        reader - The Reader from where we read.
        Returns:
        The String that we read from the Reader.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • readFileToBytearray

        public static byte[] readFileToBytearray​(java.io.File file)
                                  throws java.io.IOException
        Get a byte array from the given file.
        Parameters:
        file - The file.
        Returns:
        Returns a byte array or null.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • readFromFile

        public static java.lang.String readFromFile​(java.io.File file)
                                     throws java.io.IOException
        The Method readFromFile() reads the filecontent to a String.
        Parameters:
        file - The File to read to a String.
        Returns:
        The String from the File.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • readFromFile

        public static java.lang.String readFromFile​(java.io.File file,
                                            java.nio.charset.Charset encoding)
                                     throws java.io.IOException
        Read from file.
        Parameters:
        file - the file
        encoding - the encoding
        Returns:
        the string
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • readHeadLine

        public static java.lang.String readHeadLine​(java.lang.String inputFile)
                                     throws java.io.FileNotFoundException,
                                            java.io.IOException
        The Method readHeadLine() opens the File and reads the first line from the file.
        Parameters:
        inputFile - The Path to the File and name from the file from where we read.
        Returns:
        The first line from the file.
        Throws:
        java.io.FileNotFoundException - is thrown if the given file is not found.
        java.io.IOException - Signals that an I/O exception has occurred.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.File input)
                                                        throws java.io.FileNotFoundException,
                                                               java.io.IOException
        Reads every line from the File and puts them to the List.
        Parameters:
        input - The File from where the input comes.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.FileNotFoundException - is thrown if the given file is not found.
        java.io.IOException - Signals that an I/O exception has occurred.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.File input,
                                                               boolean trim)
                                                        throws java.io.FileNotFoundException,
                                                               java.io.IOException
        Reads every line from the File and puts them to the List.
        Parameters:
        input - The File from where the input comes.
        trim - the flag trim if the lines shell be trimed.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.FileNotFoundException - is thrown if the given file is not found.
        java.io.IOException - Signals that an I/O exception has occurred.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.File input,
                                                               java.nio.charset.Charset encoding)
                                                        throws java.io.FileNotFoundException,
                                                               java.io.IOException
        Reads every line from the File and puts them to the List.
        Parameters:
        input - The File from where the input comes.
        encoding - the encoding
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.FileNotFoundException - is thrown if the given file is not found.
        java.io.IOException - When a io-problem occurs.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.File input,
                                                               java.nio.charset.Charset encoding,
                                                               boolean trim)
                                                        throws java.io.FileNotFoundException,
                                                               java.io.IOException
        Reads every line from the File and puts them to the List.
        Parameters:
        input - The File from where the input comes.
        encoding - the charset for read
        trim - the flag trim if the lines shell be trimed.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.FileNotFoundException - is thrown if the given file is not found.
        java.io.IOException - When a io-problem occurs.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input)
                                                        throws java.io.IOException
        Reads every line from the given InputStream and puts them to the List.
        Parameters:
        input - The InputStream from where the input comes.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.IOException - When a io-problem occurs.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input,
                                                               boolean trim)
                                                        throws java.io.IOException
        Reads every line from the given InputStream and puts them to the List.
        Parameters:
        input - The InputStream from where the input comes.
        trim - the flag trim if the lines shell be trimed.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.IOException - When a io-problem occurs.

      • readLinesInList

        public static java.util.List<java.lang.String> readLinesInList​(java.io.InputStream input,
                                                               java.nio.charset.Charset encoding,
                                                               boolean trim)
                                                        throws java.io.IOException
        Reads every line from the given InputStream and puts them to the List.
        Parameters:
        input - The InputStream from where the input comes.
        encoding - the charset for read
        trim - the flag trim if the lines shell be trimed.
        Returns:
        The List with all lines from the file.
        Throws:
        java.io.IOException - When a io-problem occurs.

      • readPropertiesFromFile

        public static java.util.Properties readPropertiesFromFile​(java.lang.String filename)
                                                   throws java.io.IOException
        The Method readFromFile(String) reads from the properties-file all Properties and saves them into a Properties-Object.
        Parameters:
        filename - The Filename from the Properties-file.
        Returns:
        The Properties or null if an error occurs.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • toByteArray

        public static byte[] toByteArray​(java.io.File tmpFile)
                          throws java.io.IOException
        Get a byte array from the given file.
        Parameters:
        tmpFile - The file.
        Returns:
        Returns a byte array or null.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.

      • toByteArray

        public static byte[] toByteArray​(java.io.InputStream input)
                          throws java.io.IOException
        Get a byte array from the given InputStream.
        Parameters:
        input - The InputStream.
        Returns:
        the a byte array.
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.
        java.lang.NullPointerException - if the input is null

      • countAllLines

        public static long countAllLines​(java.io.File fileToCountTheLines)
                          throws java.io.IOException
        Count all lines from the given file
        Parameters:
        fileToCountTheLines - The File to count the lines
        Returns:
        the number of the lines from the given file
        Throws:
        java.io.IOException - Signals that an I/O exception has occurred.