java - 从文本文件读取字符时如何进行多个异常处理？

Question

我已经提到了有关 Java 中多个异常处理的早期线程。然而，当我尝试在我的代码中实现时，它无法编译。

try {
    br = new BufferedReader( new FileReader(file_name));
    while((r = br.read()) != -1){
        char c = (char) r;
        System.out.print(c);
} catch (FileNotFoundException e ){
    System.out.println("The file was not found.");
    System.exit(0);
} catch (IOException e){
    System.out.println("There was an error reading the file.");
    System.exit(0);
}

现在我知道 FileNotFoundException 是 IOException 的特殊情况，并且必须有多个 catch block ，这正是我正在做的事情，但是编译器不允许我编译它。

Answer 1

您忘记了 } 来关闭 while 循环。请更正。应该是这样的:

try {
    br = new BufferedReader( new FileReader(file_name));
    while((r = br.read()) != -1){
        char c = (char) r;
        System.out.print(c);
     }
} catch (FileNotFoundException e ){
    System.out.println("The file was not found.");
    System.exit(0);
} catch (IOException e){
    System.out.println("There was an error reading the file.");
    System.exit(0);
}