Java Thread的6中狀態圖

狀態圖

六種狀態之一

先來一波官方的解釋
A thread state. A thread can be in one of the following states:

• NEW

A thread that has not yet started is in this state.
創建了但是沒有start

• RUNNABLE

A thread executing in the Java virtual machine is in this state.
可運行的(不是正在運行)

• BLOCKED

A thread that is blocked waiting for a monitor lock is in this state.
被阻塞等到鎖(被synchronized 修飾)

• WAITING

A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
等待另外一個線程的消息.

• TIMED_WAITING

A thread that is waiting for another thread to perform an action for up to a specified waiting time is in this state.
時間等待

• TERMINATED

A thread that has exited is in this state.
退出

六種狀態之二

先看圖的左側.是線程狀態的主軸線.

再來看右側

• BLOCKD 和RUNNABLE之間的轉換

• WAITING 和RUNNABLE之間的轉換

-TIME_WAITING 和RUNNABLE之間的轉換

如何記憶

• 左邊三個是new runnable terminated;
• 右邊三個是block time_waiting waiting;
• 右邊三個和runnable之間的關係密切;
• block是因爲synchronized關鍵字