JAVA-IO流大文件拷贝

package com.test.io;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;public class TestIO {
private static int BUFFER_SIZE = 8192; public static void main(String[] args) throws IOException {
// 该文件10G 以上
String resourcesPath="f:/a.grd";
String targetPath="d:/a.grd";
File resourcesFile = new File(resourcesPath);
File targetFile = new File(targetPath);
BufferedInputStream input = new BufferedInputStream(new FileInputStream(resourcesFile));
BufferedOutputStream output = new BufferedOutputStream(new FileOutputStream(targetFile));
try { byte[] buffer = new byte[BUFFER_SIZE];
int n = 0;
while (-1 != (n = input.read(buffer, 0, BUFFER_SIZE))) {
output.write(buffer, 0, n);
}
} finally {
if (output != null) {
output.close();
}
if (input != null) {
input.close();
} }
}
}