Java中IO流的读写操作，如何处理异常情况？实例展示-蒲公英云

Java中IO流的读写操作，如何处理异常情况？实例展示

原创青旅半醒 2024-11-30 16:51 104阅读 0赞

在Java中，IO流的读写操作通常会使用try-catch语句来处理可能发生的异常。

以下是一些常见的IO流操作以及对应的异常处理示例：

FileInputStream - 读取文件内容

import java.io.FileInputStream;
import java.io.IOException;
public class FileInputStreamExample {
    public static void main(String[] args) {
        try (FileInputStream fis = new FileInputStream("test.txt")) {
            byte[] buffer = new byte[1024];
            int length = fis.read(buffer);
            while (length != -1) {
                System.out.println(new String(buffer, 0, length))));
                length = fis.read(buffer);
            }
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("Error reading file: " + e.getMessage());
        }
    }
}

PrintWriter - 写入数据到文件或打印

import java.io.FileWriter;
import java.io.IOException;
public class PrintWriterExample {
    public static void main(String[] args) {
        try (FileWriter writer = new FileWriter("test.txt")) {
            PrintWriter printWriter = new PrintWriter(writer);
            printWriter.println("Hello, World!");
            printWriter.close();
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("Error writing to file: " + e.getMessage());
        }
    }
}