Analysis of method examples of using IO stream to copy files in Java

1. Use FileInputStream and FileOutputStream to complete file copying

    public void fileCapy(String src, String dest) {
        FileInputStream fis = null;
        FileOutputStream fos = null;
 
        try {
            fis = new FileInputStream(new File(src));
            fos = new FileOutputStream(new File(dest));
            byte[] bytes = new byte[1024];
            int length;
            while ((length = fis.read(bytes)) != -1) {
                fos.write(bytes, 0, length);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

2. Use FileReader and FileWriter to complete text copying (for non-text files, only bytes can be used Stream)

    public void textCapy(String src, String dest) {
        FileReader fr = null;
        FileWriter fw = null;
 
        try {
            fr = new FileReader(new File(src));
            fw = new FileWriter(new File(dest));
            char[] chars = new char[1024];
            int length;
            while ((length = fr.read(chars)) != -1) {
                fw.write(chars, 0, length);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fw != null) {
                try {
                    fw.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
 
            if (fr != null) {
                try {
                    fr.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

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