输入：

1 import java.util.Scanner; 2  3 public class TextScanner { 4  5     /** 6      * @param args 7      */ 8     public static void main(String[] args) { 9         // TODO Auto-generated method stub10         int nextValue, sum = 0;11         Scanner kpInput = new Scanner(System.in);//创建Scanner对像12         kpInput.useDelimiter("\\s");//设置分隔符13         while (kpInput.hasNextInt()) {
    //使用hasNextInt()方法判断是否还有整数14             nextValue = kpInput.nextInt();//读取整数流中的下一个整数15             sum += nextValue;16         }17         kpInput.close();18         System.out.println("Sum:" + sum);19 20     }21 22 }

运算结果： 输出：

1 import java.io.File; 2 import java.io.FileNotFoundException; 3 import java.util.Scanner; 4  5  6 public class Text { 7     public static void main(String[] args) { 8         //从文件中逐行读取数据 9         String name;10         int age;11         Scanner fileInput;12         File inFile = new File("src\\Ages.dat");13         try {14             fileInput = new Scanner(inFile);15             while(fileInput.hasNext()){16                 name = fileInput.next();17                 age = fileInput.nextInt();18                 System.out.printf("%s is %d years old.\n",name,age);19             }20             fileInput.close();21             22         } catch (FileNotFoundException e) {23             // TODO: handle exception24             e.printStackTrace();25         }26     }27 }