JAVA FileOutputStream类示例

//FileOutputStream类示例

public class Demo {

public static void main(String[] args) {

try { 

FileInputStream input = FileInputStream("data.json");

FileOutputStream output = new FileOutputStream("output.json");

byte[] byteArray = new byte[input.available()];

input.read(byteArray);

output.write(byteArray);

input.close();

output.close();

} catch (Exception e) {

System.out.println("系统异常："+e.getMessage());

}

}