Java線程切換

1. 接受線程

   /**
   	 * description:
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/12/5    12:55 AM
   	 */
   	public class DataHandler {
   
   		// 數據副本
   		private String mData;
   
   		public DataHandler() {
   			initSwithThread();
   		}
   
   		/**
   		 * 發送數據，供外部調用
   		 * @param data
   		 */
   		public void sendData(String data) {
   			// 拷貝數據
   			mData = data;
   		}
   
   		private void initSwithThread() {
   			new Thread(new Runnable() {
   
   				@Override
   				public void run() {
   					while(true) {
   						if(null != mData && mData.length() > 0) {
   							System.out.println("process data, run in thread : "
   									+ Thread.currentThread().getName() + ", data = " + mData);
   							// 數據發送後,清除數據副本mData
   							mData = null;
   						}
   						// 爲了可以清晰看清結果這裏讓thread休眠1s
   						try {
   							Thread.sleep(1000);
   						} catch (InterruptedException e) {
   							e.printStackTrace();
   						}
   					}
   				}
   			}, "ThreadB").start();
   		}
   	}

2. 發送線程

   /**
   	 * description:
   	 *
   	 * @author: dawn.he QQ:       905845006
   	 * @email: dawn.he@cloudwise.com
   	 * @email: 905845006@qq.com
   	 * @date: 2019/12/5    12:55 AM
   	 */
   	public class ThreadTest {
   
   		public static DataHandler mHandler;
   
   		public static void main(String[] args) {
   
   			mHandler = new DataHandler();
   
   			Thread threadA = new Thread(new Runnable() {
   
   				@Override
   				public void run() {
   					// 線程A中發送數據
   					String data = "hello code 9527";
   					System.out.println("send data, run in thread : "
   							+ Thread.currentThread().getName() + ", data = " + data);
   					// 經過DataHandler將數據拷貝到線程B中處理
   					mHandler.sendData(data);
   
   				}
   			}, "threadA");
   			threadA.start();
   
   		}
   
   	}