直接上程式碼

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;


public class TestPrint26 {
    
    public static void main(String[] args) {
        
        String file1 = "D:\\ING\\172-26-223-soapui-project.xml";    //被複制的檔案
        String path = "C:\\ING";    //
 
新檔案路徑
        String file2 = "newfile.xml";    //新檔名
        
        copyFile(file1, path, file2);
        
    }
    
    
    /**
     * 把file1複製到file2
     * @param file1    要被複制的檔案
     * @param path    新檔案所在目錄
     * @param file2    複製之後的新檔案
     */
    public static void copyFile(String file1, String path, String file2) {
        
        FileInputStream fis 
 
= null;
        FileOutputStream fos = null;
        
        try {
            
            //新建file2的目錄
            File fileDir = new File(path);
            if (!fileDir.exists()) {
                fileDir.mkdirs();
            }
            //新建file2
            File newFile = new File(path + "\\" + file2);
            
 
//新建兩個流
            fis = new FileInputStream(file1);
            fos = new FileOutputStream(newFile);
            
            byte[] buf = new byte[1024];    //可以寫1024的倍數
            int len = 0;
            while ((len = fis.read(buf)) != (-1)) {
                fos.write(buf, 0, len);
            }
            
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            
            try {
                if (fis != null) {
                    fis.close();    //關閉流
                }
            } catch (IOException e2) {
                e2.printStackTrace();
            }
            try {
                if (fos != null) {
                    fos.close();    //關閉流
                }
            } catch (IOException e2) {
                e2.printStackTrace();
            }
            
        }
        
    }

}