Java:檔案操作例項
阿新 • • 發佈:2021-11-09
檔案操作
檔案寫入
import java.io.*; public class Main { public static void main(String[] args){ try{ BufferedWriter file1 = new BufferedWriter(new FileWriter("a.txt")); file1.write("hello"); file1.close(); System.out.println("creation succeeded"); } catch (IOException e){ } } }
檔案內容讀取
public class Main { public static void main(String[] args){ try { BufferedReader reader = new BufferedReader(new FileReader("a.txt")); String str; while ((str = reader.readLine()) != null){ System.out.println(str); } } catch (IOException e){ } } }
刪除檔案
public class Main{
public static void main(String[] args){
File file = new File("c:\\Users\\zzzzo\\test.txt");
if (file.delete()) System.out.println(file.getName() + " is deleted");
else System.out.println("Deleting failed");
}
}
test.txt需要提前建立