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import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
/**
* @author dengshaohua
*/
public class ReadPhone {
/**
* ¶ÁÈ¡Êý¾Ý
*/
public void ReadData(){
try {
FileReader read = new FileReader("D:/data.txt");
BufferedReader br = new BufferedReader(read);
String row;
while((row = br.readLine())!=null){
System.out.println(row);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e){
e.printStackTrace();
}
}
}

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String st1 = "dsadas";
      System.out.println("st1:"+st1.startsWith("sa",1));
      String st2 = "dsadas";
      System.out.println("st1:"+st2.startsWith("sa"));
      String st3 = "dsadas";
      System.out.println("st2:"+st3.startsWith("ds"));
      String st4 = "dsadas";
      System.out.println(" ......

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