fileutils.java

Java Bytecode Editor 是一个 JAVA 的字节码反汇编和修改器。它可以很方便的修改已经编译成 Class 文件的 JAVA 文件。

package org.gjt.jclasslib.util;

import java.io.*;

public class FileUtils {
    public static void copy(File source, File target) throws IOException {
        InputStream in = new FileInputStream(source);
        OutputStream out = new FileOutputStream(target);
    
        byte[] buffer = new byte[1024];
        int len;
        while ((len = in.read(buffer)) > 0) {
            out.write(buffer, 0, len);
        }
        in.close();
        out.close();
    }
}