本教程操作环境：windows7系统、java10版，DELL G3电脑。
1、使用FileInputStream、FileOutputStream完成文件的复制
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | 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();
}
}
}
}
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2、使用FileReader、 FileWriter完成文本的复制(对于非文本文件, 只能使用字节流)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | 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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以上就是Java中IO流复制文件的方法，希望能对大家有所帮助。更多Java学习指路：Java基础
