「按行读取文件java」按行读取文件 Python
今天给各位分享按行读取文件java的知识，其中也会对按行读取文件 Python进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
java读txt方法
1).按行读取TXT文件
package zc;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
public class readLine {
public static void main(String[] args) {
// TODO Auto-generated method stub
File file = new File("C:/zc.txt");
BufferedReader reader = null;
String tempString = null;
int line =1;
try {
System.out.println("以行为单位读取文件内容，一次读一整行：");
reader = new BufferedReader(new FileReader(file));
while ((tempString = reader.readLine()) != null) {
System.out.println("Line"+ line + ":" +tempString);
line ++ ;
}
reader.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(reader != null){
try {
reader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
2).按字节读取TXT文件
package zc;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
public class readerFileByChars {
public static void main(String[] args) {
// TODO Auto-generated method stub
File file = new File("c:/zc.txt");
InputStream in = null;
byte[] tempByte = new byte[1024];
int byteread = 0;
try {
System.out.println("以字节为单位读取文件内容，一次读多个字节：");
in = new FileInputStream(file);
while ((byteread = in.read(tempByte)) != -1 ) {
System.out.write(tempByte, 0, byteread);
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if (in != null) {
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
Java中如何一行行地读文件
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class ReadTest {
public static void main(String[] args) {
// 读控制台输入的文字!
BufferedReader br = null;
String str = null;
try {
br = new BufferedReader(new InputStreamReader(System.in));
while (true) {
str = br.readLine();
if (str.equals("886"))
break;
System.out.println(str);
}
// 读文本文件..
br = new BufferedReader(new FileReader(new File("C:\\Users\\Administrator\\Desktop\\地址.txt")));
for (str = br.readLine(); str != null; str = br.readLine()) {
//打印你读的文本数据!
System.out.println(str);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
核心就是:readLine()方法,一行一行的读!
如何用java按行读取文本文件
File file = new File("文件地址");
Scanner scanner = new Scanner(file);
String lineContent = null;
while(scanner.hasNextLine()){//如果有下一行
lineContent = scanner.nextLine();//读取下一行内容
}
scanner.close();//关闭Scanner
“java”中多线程按行读取txt且每个线程读的内容不能重复，这么求“demo”？
public class Test{\x0d\x0a public static void main(String args[])throws Exception{\x0d\x0a File file = new File("D:\\Test.java");//Text文件\x0d\x0a BufferedReader br = new BufferedReader(new FileReader(file));//构造一个BufferedReader类来读取文件\x0d\x0a String s = null;\x0d\x0a while((s = br.readLine())!=null){//使用readLine方法，一次读一行\x0d\x0a System.out.println(s);\x0d\x0a }\x0d\x0a br.close();;\x0d\x0a }\x0d\x0a}
按行读取文件java的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于按行读取文件 Python、按行读取文件java的信息别忘了在本站进行查找喔。