Read double input from text file in java -


i have problems regarding reading double input text file

i writing progran can read input fron file contains number this

  • 3.4 5.0 12
  • 1.3 8.2 6
  • 0.8 9.1 2.3

anyone got idea or tips please..??

package test;  import java.io.*; import java.util.*; import java.io.ioexception; import java.io.objectoutputstream; import java.io.serializable; import java.io.fileinputstream; import java.io.inputstream; import java.io.objectinputstream;  public class readfilevector { public static void main(string[] args){     try{         readdatafromfile();     }catch(ioexception ex){         ex.printstacktrace();     }   } public static void readdatafromfile() throws ioexception{     double a, b, c;      fileinputstream fis = null;     try{         fis = new fileinputstream(new file("d:\\pro1\\vector.inp.txt"));         datainputstream dis = new datainputstream(fis);          = dis.readdouble();         b = dis.readdouble();         c = dis.readdouble();          system.out.println("double:" + + "; double:" + b + ";double:" + c );     }catch(ioexception ex){         ex.printstacktrace();     }finally{         if(fis != null)             fis.close();     } }

} i'm trying this

string stringvalue = new scanner( new file("mydoubles.txt") ).usedelimiter("\\a").next();  // split string whitespace string[] doublesasstrings = stringvalue.split("\\s+");  for( int = 0; < doublesasstrings.length; i++ )     double val = double.parsedouble( doublesasstrings[i] );

you idea.

source:how create java string contents of file?


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