Class LazyFileInputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable

    public class LazyFileInputStream
    extends java.io.InputStream
    This Class implements an InputStream that provides the same functionality as a FileInputStream but opens the file by the first file access.
    • Constructor Summary

      Constructors 
      Constructor Description
      LazyFileInputStream​(java.io.File file)
      Creates a new LazyFileInputStream for the given file.
      LazyFileInputStream​(java.io.FileDescriptor fdObj)
      Creates a new LazyFileInputStream for the given file desciptor.
      LazyFileInputStream​(java.lang.String name)
      Creates a new LazyFileInputStream for the given file.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int available()
      void close()
      void mark​(int readlimit)
      boolean markSupported()
      void open()
      Opens the underlying file input stream in neccessairy.
      int read()
      int read​(byte[] b)
      int read​(byte[] b, int off, int len)
      void reset()
      long skip​(long n)
      • Methods inherited from class java.io.InputStream

        nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo
      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • LazyFileInputStream

        public LazyFileInputStream​(java.io.File file)
                            throws java.io.FileNotFoundException
        Creates a new LazyFileInputStream for the given file. If the file is unreadably, a FileNotFoundException is thrown.
        Parameters:
        file -
        Throws:
        java.io.FileNotFoundException
      • LazyFileInputStream

        public LazyFileInputStream​(java.io.FileDescriptor fdObj)
        Creates a new LazyFileInputStream for the given file desciptor.
        Parameters:
        fdObj -
      • LazyFileInputStream

        public LazyFileInputStream​(java.lang.String name)
                            throws java.io.FileNotFoundException
        Creates a new LazyFileInputStream for the given file. If the file is unreadably, a FileNotFoundException is thrown.
        Parameters:
        name -
        Throws:
        java.io.FileNotFoundException
    • Method Detail

      • open

        public void open()
                  throws java.io.IOException
        Opens the underlying file input stream in neccessairy.
        Throws:
        java.io.IOException
      • read

        public int read()
                 throws java.io.IOException
        Specified by:
        read in class java.io.InputStream
        Throws:
        java.io.IOException
      • available

        public int available()
                      throws java.io.IOException
        Overrides:
        available in class java.io.InputStream
        Throws:
        java.io.IOException
      • close

        public void close()
                   throws java.io.IOException
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Overrides:
        close in class java.io.InputStream
        Throws:
        java.io.IOException
      • reset

        public void reset()
                   throws java.io.IOException
        Overrides:
        reset in class java.io.InputStream
        Throws:
        java.io.IOException
      • markSupported

        public boolean markSupported()
        Overrides:
        markSupported in class java.io.InputStream
      • mark

        public void mark​(int readlimit)
        Overrides:
        mark in class java.io.InputStream
      • skip

        public long skip​(long n)
                  throws java.io.IOException
        Overrides:
        skip in class java.io.InputStream
        Throws:
        java.io.IOException
      • read

        public int read​(byte[] b)
                 throws java.io.IOException
        Overrides:
        read in class java.io.InputStream
        Throws:
        java.io.IOException
      • read

        public int read​(byte[] b,
                        int off,
                        int len)
                 throws java.io.IOException
        Overrides:
        read in class java.io.InputStream
        Throws:
        java.io.IOException