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  • JAVA,字符流文件读写

    读取文件代码如下:

    package com.java.day23FileReader;
    
    import java.io.FileReader;
    import java.io.IOException;
    
    public class RederFile {
        public static void main(String[] args) {
            readFile();
        }
    
        public static void readFile() {
            FileReader fr = null;
            try {
                fr = new FileReader("D:\IdeaProjects\StudyJava\day01\src\com\java\day23FileReader\test01");
                int len = 0;
                while ((len = fr.read()) != -1) {
                    System.out.print((char) len);
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (fr != null) {
                    try {
                        fr.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }

    效果如图:

     写入文件代码如下:

    package com.java.day25FileWrite;
    
    import java.io.FileWriter;
    import java.io.IOException;
    
    public class WriteFile {
        public static void main(String[] args) {
            fileWrite();
        }
    
        public static void fileWrite() {
            FileWriter fw = null;
            try {
                fw = new FileWriter("D:\IdeaProjects\StudyJava\day01\src\com\java\day25FileWrite\test01.txt",true);
                fw.write("Hello世界"+"
    ");
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (fw != null) {
                    try {
                        fw.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }

    运行效果如图:

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  • 原文地址:https://www.cnblogs.com/xiamaojjie/p/15062050.html
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