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public class Person {
 private String name;
 
 public Person()
 {
  name = "no name";
 }
 
 public Person(String thename )
 {
  name = thename;
 }
 
 public String getName()
 {
  return name;
 }
}
public interface KillMethod {       /*½Ó¿Ú*/
 public void kill(Person p);
}
public class Killer1 implements KillMethod {
 private String name;
 
 public Killer1(String thename )
 {
  name = thename;
 }
 
 public String getName()
 {
  return name;
 }
 
 public void kill(Person p)
 {
  System.out.println("´Ìɱ" + p.getName());
 }
}
public class Killer2 implements KillMethod {
 private String name;
 
 public Killer2(String thename )
 {
  name = thename;
 }
 
 public String getName()
 {
  return name;
 }
 
 public void kill(Person p)
 {
  System.out.println("¶¾É±" + p.getName());
 }
}
public class TestAll {
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  
  Person victim = new Person("ÙøÕþ");
  Killer1 killer1 = new Killer1("¾£éð");
  System.out.print(killer1.getName());
  killer1.kill(victim);
  
  Killer2 killer2 = new Killer2("¸
    
     
	
	
    
    
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package com.fengfei.test;
public class GetNumber {
 /**
  * ÌåÑéJavaµÄÕýÔò±í´ïʽ£¬ÕÒ³ö×Ö·û´®sÖеÄÊý×Ö
  * @param args
  */
 public static void main(String[] args) {
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    1)   ¸ñʽ»¯ÕûÊý(°Ñ¸¡µãÊýת»¯ÎªÕûÊý)
       NumberFormat nf = NumberFormat.getIntegerInstance();
       double v=12.6;
       System.out.println(nf.format(v));
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