Java Program on How to Read Data from File
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Program 1
package dataflair; import java.io.*; public class TestRead1 { public static void main(String[] args) throws IOException { File F=new File("d://dataflair/student.txt"); char ch; int n; if(F.isFile()) { FileInputStream fis=null; try { fis=new FileInputStream(F); while((n=fis.read())!=-1) { ch=(char)(n); System.out.print(ch); } } finally { fis.close(); } } else System.out.println("File not Found......"); } }
Program 2
package dataflair; import java.io.*; public class TestRead2 { public static void main(String[] args) throws IOException { File F=new File("d://dataflair/student.txt"); char ch; if(F.isFile()) { FileInputStream fis=null; try { fis=new FileInputStream(F); int n; n=(int)(F.length()); byte b[]; b=new byte[n]; fis.read(b); String S=new String(b); System.out.println(S); } finally { fis.close(); } } } }
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