Java File txt 읽기

한글자씩 읽기

package com.hankooktech.glp.common.util;



import java.io.*;
public class TextFileReadTest {

    public static void main(String args[])throws IOException {
        File txtFile = new File("/Users/gujagwang/glp_sample/you_test.txt");
        txtFile.createNewFile();
        FileReader freader = new FileReader(txtFile);
        // 설정된 크기까지만 읽어온다
        char [] b = new char[300];
        freader.read(b);
        for(char c : b){
            System.out.print(c);
        }
        freader.close();

    }
}

한 라인씩 읽기

import java.io.*;
public class TextFileReadTest {

    public static void main(String args[])throws IOException {
        File txtFile = new File("/Users/gujagwang/glp_sample/you_test.txt");
        txtFile.createNewFile();

         BufferedReader lineObj = new BufferedReader(new FileReader(txtFile));

        String lineStr;
        while ((lineStr = lineObj.readLine()) != null){
            
            System.out.println(lineStr);
        }
    }
}