scanner两个例子（转）

import java.io.FileReader;
import java.util.Scanner;
import java.io.FileNotFoundException;
public class SurnameReader {
 public static void main(String args[]) throws FileNotFoundException {
 FileReader fileReader =new FileReader("src/test.txt");
 // create a scanner from the data file
 Scanner scanner = new Scanner(fileReader);
 // repeat while there is a next item to be scanned
 while (scanner.hasNext()) { //一行一行的读入
   // retrieve each data element
   String name = scanner.next();
   int age = scanner.nextInt();
   String time = scanner.next();
   boolean bool = scanner.nextBoolean();
   System.out.println(name+"  "+age+"  "+time+"  "+bool); //一行一行的输出
  }
 
  scanner.close(); // also closes the FileReader
 }
}

test.txt
老赵  28  feb-01  true
小竹  22  dec-03  false
阿波  21  dec-03  false
凯子  25  dec-03  true

执行结果如test.txt

以“,”分隔输入，默认是以空格输入

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;

public class readhuman {
	private static void readfile(String filename) {
		try {
			Scanner scanner = new Scanner(new File(filename));
			// Scanner使用空白符作为默认的分隔符，用户可以很容易地更改分隔符的默认设置。
			scanner.useDelimiter(System.getProperty("line.separator"));
			while (scanner.hasNext()) {
				parseline(scanner.next());
			}
			scanner.close();
		} catch (FileNotFoundException e) {
			System.out.println(e);
		}
	}

	private static void parseline(String line) {
		Scanner linescanner = new Scanner(line);
		// Scanner使用空白符作为默认的分隔符，用户可以很容易地更改分隔符的默认设置。
		linescanner.useDelimiter(",");
		// 可以修改usedelimiter参数以读取不同分隔符分隔的内容
		String name = linescanner.next();
		int age = linescanner.nextInt();
		String idate = linescanner.next();
		boolean iscertified = linescanner.nextBoolean();
		System.out.println("姓名：" + name + " ，年龄：" + age + " ，入司时间：" + idate
				+ " ，验证标记：" + iscertified);
	}

	public static void main(String[] args) {
		if (args.length != 1) {
			System.err.println("usage: java readhuman file_location");
			System.exit(0);
		}
		readfile(args[0]); //参数为comma.txt
	}
}

comma.txt
hell,28,feb-01,true

执行结果：
姓名：hell ，年龄：28 ，入司时间：feb-01 ，验证标记：true

源码见附件