{"id":89769,"date":"2024-12-09T18:00:56","date_gmt":"2024-12-09T12:30:56","guid":{"rendered":"https:\/\/techvidvan.com\/tutorials\/?p=89769"},"modified":"2024-12-09T18:53:40","modified_gmt":"2024-12-09T13:23:40","slug":"java-filterinputstream-class","status":"publish","type":"post","link":"https:\/\/techvidvan.com\/tutorials\/java-filterinputstream-class\/","title":{"rendered":"Java FilterInputStream Class"},"content":{"rendered":"

The InputStream is implemented by the Java FilterInputStream class. To provide extra functionality, it has various subclasses like DataInputStream and BufferedInputStream. So, its individual use is declining.<\/p>\n

Explanation<\/h2>\n

The Java FilterInputStream class functions similarly to the Java InputStream class; however, it merely overrides the InputStream class methods and passes the request to the InputStream.<\/p>\n

The FilterInputStream Class’s read() method filters, reads and forwards the data to the underlying stream filtering, which the Streams carry out.<\/p>\n

Syntax<\/strong><\/p>\n

public class FilterInputStream extends Inputstream<\/pre>\n
Constructor<\/h3>\n
protected FilterInputStream(InputStream in): assigns the argument to the field this.in to create a FilterInputStream and stores it for later use.<\/p>\n
Methods<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n
Method\u00a0<\/strong><\/td>\nDescription\u00a0<\/strong><\/td>\n<\/tr>\n
int available()<\/span><\/td>\nIt provides a ballpark estimate of the data that can be read from the input stream.<\/span><\/td>\n<\/tr>\n
int read()<\/span><\/td>\nIt reads the subsequent data byte from the input stream.<\/span><\/td>\n<\/tr>\n
int read(byte[] b)<\/span><\/td>\nIt reads data from the input stream up to byte.length bytes in length.<\/span><\/td>\n<\/tr>\n
long skip(long n)<\/span><\/td>\nIt aims to remove and skip n bytes of data from the input stream.<\/span><\/td>\n<\/tr>\n
boolean markSupported()<\/span><\/td>\nIt checks whether the input stream supports the mark and reset methods.<\/span><\/td>\n<\/tr>\n
void mark(int readlimit)<\/span><\/td>\nIt serves as a marker for the input stream’s current position.<\/span><\/td>\n<\/tr>\n
void reset()<\/span><\/td>\nResetting the input stream is done with it.<\/span><\/td>\n<\/tr>\n
Void close()<\/span><\/td>\nThe input stream is closed using it.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Example<\/h4>\n
import java.io.*;  \r\npublic class TechVidvan{  \r\n    public static void main(String[] args) throws IOException {  \r\n        File data = new File(\"D:\\\\testout.txt\");  \r\n        FileInputStream  file = new FileInputStream(data);  \r\n        FilterInputStream filter = new BufferedInputStream(file);  \r\n        int k =0;  \r\n        while((k=filter.read())!=-1){  \r\n            System.out.print((char)k);  \r\n        }  \r\n        file.close();  \r\n        filter.close();  \r\n    }  \r\n}<\/pre>\n
Output<\/strong>
\nJava programming in TechVidvan<\/p>\n
Example<\/h4>\n
import java.io.BufferedInputStream;\r\nimport java.io.FileInputStream;\r\nimport java.io.FilterInputStream;\r\nimport java.io.IOException;\r\npublic class TechVidvan {\r\npublic static void main(String[ ] args) throws IOException\r\n{\r\n String filepath = \"D:\\\\myfile.txt\";\t\r\n FileInputStream  fis = new FileInputStream(filepath);  \r\n FilterInputStream filter = new BufferedInputStream(fis);  \r\n  \r\n int availableBytes = filter.available();\r\n System.out.println(\"Initial bytes: \" +available);\r\n \r\n filter.read();\r\n filter.read();\r\n filter.read();\r\n \r\n int available = filter.available();\r\n System.out.println(\"after reading 3bytes: \" +available);\r\n filter.close();  \r\n }\r\n}<\/pre>\n
Output<\/strong>
\nInitial bytes:<\/strong> 25
\nafter reading 3bytes:<\/strong> 22<\/p>\n
Example<\/h4>\n
import java.io.BufferedInputStream;\r\nimport java.io.File;\r\nimport java.io.FileInputStream;\r\nimport java.io.FilterInputStream;\r\nimport java.io.IOException;\r\npublic class StudyTonight \r\n{\r\n  public static void main(String[] args) throws IOException \r\n  { \r\n    File data = new File(\"E:\\\\studytonight\\\\output.txt\");  \r\n    FileInputStream  file = new FileInputStream(data);  \r\n    FilterInputStream filter = new BufferedInputStream(file);  \r\n    int ch =0;  \r\n    while((ch=filter.read())!=-1){  \r\n      System.out.println(filter.available());  \r\n    }  \r\n    file.close();  \r\n    filter.close();   \r\n  }  \r\n}<\/pre>\n
Output<\/strong><\/p>\n
5
\n4
\n3
\n2
\n1
\n0
\nJava<\/p>\n
Conclusion<\/h3>\n
The superclass of the input operation, the input stream, is used to read user input from a file, keyboard, etc. It is employed to depict a byte-stream input. It skips n bytes of data from the input stream and discards it.<\/p>\n","protected":false},"excerpt":{"rendered":"
The InputStream is implemented by the Java FilterInputStream class. To provide extra functionality, it has various subclasses like DataInputStream and BufferedInputStream. So, its individual use is declining. Explanation The Java FilterInputStream class functions similarly...<\/p>\n","protected":false},"author":6,"featured_media":447238,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[183],"tags":[5520,295,296,298,5686,299,263,250],"class_list":["post-89769","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-filterinputstream-class","tag-filterinputstream-class-in-java","tag-java","tag-java-filterinputstream-class","tag-java-filterinputstream-class-with-examples","tag-java-tutorial","tag-java-tutorial-for-beginners","tag-learn-java"],"yoast_head":"\nJava FilterInputStream Class - TechVidvan<\/title>\n<meta name=\"description\" content=\"The FilterInputStream Class's read() method filters, reads and forwards the data to the underlying stream filtering, which the Streams carry out.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/techvidvan.com\/tutorials\/java-filterinputstream-class\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java FilterInputStream Class - 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