writerandreaderfile.java

来自「此文档包含有AOP」· Java 代码 · 共 55 行

package test.file;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

public class WriterAndReaderFile {

	public static void main(String[] args) {
		File file = new File("src/printf.txt");
		FileReader reader = null;
		if (!file.isFile()) {
			System.out.println("File doesn't exist!!");
			try {
				file.createNewFile();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		PrintWriter print = null;
		FileWriter writer = null;
		
		try {
//			print = new PrintWriter(file);
//			print.append("The!");
//			print.printf("the test %.0f\r\n", 2.6);
//			print.printf("the test %f\r\n", 2.6);
//			print.printf("the test %.0f\r\n", 2.4);
//			System.out.print("Success!");
//			print.flush();
			
			writer = new FileWriter(file);
			BufferedWriter bufWriter = new BufferedWriter(writer);
			bufWriter.append("The Last Line!");
			bufWriter.flush();
			// Create Reader
			reader = new FileReader(file);
			BufferedReader buf = new BufferedReader(reader);
			System.out.println("/*------ Begin Reader ------*/");
			System.out.println(buf.readLine());
			System.out.println(buf.readLine());
			System.out.println(buf.readLine());
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}