多线程应用实例（批量发送短信）

1、创建实体类

package com.cppdy;public class UserEntity {        private int id;    private String name;        public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

2、创建工具类

package com.cppdy;import java.util.ArrayList;import java.util.List;public class ListUtils {    static public 
      
        List
       
        
         > splitList(List
         
           list, int pageSize) {        int listSize = list.size();        int page = (listSize + (pageSize - 1)) / pageSize;        List
          
           
            > arrayList = new ArrayList
            
             
              >(); for (int i = 0; i < page; i++) { List
              
                subList = new ArrayList
               
                (); for (int j = 0; j < listSize; j++) { int pageIndex = ((j + 1) + (pageSize - 1)) / pageSize; if (pageIndex == (i + 1)) { subList.add(list.get(j)); } if((j+1)==((j+1)*pageSize)) { break; } } arrayList.add(subList); } return arrayList; }}
               
              
             
            
           
          
         
        
       
      

3、创建实例类

package com.cppdy;import java.util.ArrayList;import java.util.List;class sendMsgThread extends Thread{        List
      
        userList;    public sendMsgThread(List
       
         list) {        this.userList=list;    }    @Override    public void run() {        for (int i = 0; i < userList.size(); i++) {            System.out.println("线程"+this.getId()+"发送短信给"+userList.get(i).getName());        }    }}public class Send {    public static void main(String[] args) {                List
        
         
          > splitList = ListUtils.splitList(initUser(), 40);        for (int i = 0; i < splitList.size(); i++) {            new sendMsgThread(splitList.get(i)).start();        }    }    public static List
          
            initUser(){        ArrayList
           
             userList = new ArrayList<>(); UserEntity userEntity; for (int i = 0; i < 150; i++) { userEntity = new UserEntity(); userEntity.setId(i); userEntity.setName("name"+i); userList.add(userEntity); } return userList; }}