打开一个文本文件,每次读取一行内容,将每一行作为String读入,并

发布时间：2020-12-15 08:22:30 所属栏目：Java 来源：网络整理

导读：import java.io.*;import java.util.LinkedList;import static util.Print.print;public class LoadTest { public static void main(String[] args) throws IOException { BufferedReader in = new BufferedReader(new FileReader("src/LoadTest.java")); St


import java.io.*;
import java.util.LinkedList;
import static util.Print.print;

public class LoadTest {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new FileReader("src/LoadTest.java"));
        String str;
        LinkedList<String> ls=new LinkedList<String>();
        while ((str = in.readLine()) != null) {
           ls.addFirst(str+"n");
        }
        in.close();
        print(ls);
    }
}

输出:

[,},print(ls.toString());,in.close();,ls.addFirst(str+"n");,while ((str = in.readLine()) != null) {,LinkedList<String> ls=new LinkedList<String>();,String str;,BufferedReader in = new BufferedReader(new FileReader("src/LoadTest.java"));,public static void main(String[] args) throws IOException {,public class LoadTest {,import static util.Print.print;,import java.util.LinkedList;,import java.util.Date;,import java.io.*;
]

?使读取的文件的名字作为命令行参数形式提供.

public class LoadTest {
    public static void main(String[] args) throws IOException {

        BufferedReader in = new BufferedReader(new FileReader(args[0]));
        String str;
        LinkedList<String> ls=new LinkedList<String>();
        while ((str = in.readLine()) != null) {
           ls.addFirst(str+"n");
        }
        in.close();
        print(ls);
    }
}

　所有行变成大写形式

public class LoadTest {
    public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new FileReader(args[0]);
        String str;
        LinkedList<String> ls=new LinkedList<String>();
        while ((str = in.readLine()) != null) {
            ls.addFirst((str+"n").toUpperCase());
        }
        in.close();
        print(ls);
    }
}

（编辑：李大同）

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