Here you can find the source of copyFile(String srFilePath, String dtFilePath)
public static void copyFile(String srFilePath, String dtFilePath)
//package com.java2s; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class Main { public static void copyFile(String srFilePath, String dtFilePath) { try {/* w ww .ja v a 2 s . c o m*/ File srFile = new File(srFilePath); File dtFile = new File(dtFilePath); InputStream in = new FileInputStream(srFile); OutputStream out = new FileOutputStream(dtFile); byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); } in.close(); out.close(); } catch (FileNotFoundException ex) { ex.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }