您是指,整个文件读取为一个字符串,还是一行一条字符串的字符串数数组?
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.List;
/**
* 2016年9月2日下午5:42:55
*
* @author 3306 TODO Have fun
*/
public class FileUtil {
public static void main(String[] args) {
String path = "D://Hello.java";//这里请修改为您的文件
try {
for (String each : readFile(path)) {
System.out.println(each);
}
System.out.println("\n\n----------------------------------\n\n");
System.out.println(readFileForOneLine(path));//文件内容全部为一个字符串
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 读取文件内容
*
* @param path 文件详细路径
* 如: D://my.txt
* @return List<String>
* @throws IOException java.IO异常
*/
public static List<String> readFile(String path) throws IOException {
File targetFile = new File(path);
List<String> fileContent = new ArrayList<>();//存放文件内容
if (targetFile.exists()) {
RandomAccessFile randomAccessFile = new RandomAccessFile(targetFile, "r");//赋予文件读取权限
String eachLine;
while (null != (eachLine = randomAccessFile.readLine())) {
fileContent.add(eachLine);
}
}
return fileContent;
}
/**
* 读取文件内容
*
* @param path 文件详细路径
* 如: D://my.txt
* @return String
* @throws IOException java.IO异常
*/
public static String readFileForOneLine(String path) throws IOException {
File targetFile = new File(path);
StringBuilder fileContent = new StringBuilder();
if (targetFile.exists()) {
RandomAccessFile randomAccessFile = new RandomAccessFile(targetFile, "r");//赋予文件读取权限
String eachLine;
while (null != (eachLine = randomAccessFile.readLine())) {
fileContent.append(eachLine + "\n");
}
}
return fileContent.toString();
}
}
追问一行一个字符串
追答第一个方法就是了