testtransform2.java

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import java.io.*;
public class TestTransForm2 {
  public static void main(String args[]) {
    InputStreamReader isr = 
            new InputStreamReader(System.in);
    BufferedReader br = new BufferedReader(isr);
    String s = null;
    try {
      s = br.readLine();
      while(s!=null){
        if(s.equalsIgnoreCase("exit")) break;
        System.out.println(s.toUpperCase());
        s = br.readLine();
      }
      br.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
} //阻塞