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        import edu.ustc.*;
        public class A{
          public static void main(String[] args){
            B b = new B();
            b.print();
          }
        }
   £¨2£©B.java
        package edu.ustc;
        public class B{
          public void print(){
            System.out.println("hello");
          }
       }
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        package edu.main;
        import edu.ustc.*;
        public class A{
          public static void main(String[] args){
            B b = new B();
            b.print();
      


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 package edu.zzu.jdbc.Test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import com.ambow.jdbc.entity.Student;
public class TestDBConn{
 
 public static void main(String args[]){
  
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