Java中Synchronized的用法

/**

* 同步執行緒
*/class syncthread implements runnable 
public
void
run() catch (interruptedexception e) }}
}public
intgetcount() 
}

syncthread syncthread =

new syncthread();
thread thread1 =
newthread(syncthread, "syncthread1");
thread thread2 =
newthread(syncthread, "syncthread2");
thread1.start();
thread2.start();

thread thread1 =

newthread(new syncthread(), "syncthread1");
thread thread2 =
newthread(new syncthread(), "syncthread2");
thread1.start();
thread2.start();

syncthread syncthread1 = new syncthread();

syncthread syncthread2 = new syncthread();
thread thread1 = new thread(syncthread1, "syncthread1");
thread thread2 = new thread(syncthread2, "syncthread2");
thread1.start();
thread2.start();

class

counter
implements
runnable
public
void countadd() catch (interruptedexception e) }}
}//非synchronized**塊，未對count進行讀寫操作，所以可以不用synchronized
public
void printcount() catch (interruptedexception e) }}
public
void run() else
if (threadname.equals("b")) 
}}

counter counter =

new counter();
thread thread1 =
newthread(counter, "a");
thread thread2 =
newthread(counter, "b");
thread1.start();
thread2.start();

/**

* 銀行賬戶類
*/class account 
//存錢
public
void
deposit(float amt) catch (interruptedexception e) 
}//取錢
public
void
withdraw(float amt) catch (interruptedexception e) 
}public
float
getbalance() 
}/**
* 賬戶操作類
*/class accountoperator implements runnable
public
void
run() 
}}

account account = new account("zhang san", 10000.0f);

accountoperator accountoperator = new accountoperator(account);
final
int thread_num = 5;
thread threads = new thread[thread_num];
for (int i = 0; i < thread_num; i ++)

public

void
method3(someobject obj)
}

class

test
implements
runnable
}public
void run() 
}

public synchronized void

run() catch (interruptedexception e) 
}}

public synchronized void method

()

public void method

()}

class

parent 
}class
child
extends
parent 
}

class

parent 
}class
child
extends
parent 
}

public synchronized static void method

()

/**

* 同步執行緒
*/class syncthread implements runnable 
public
synchronized
static
void
method() catch (interruptedexception e) }}
public
synchronized
void
run() 
}

syncthread syncthread1 =

new syncthread();
syncthread syncthread2 =
new syncthread();
thread thread1 =
newthread(syncthread1, "syncthread1");
thread thread2 =
newthread(syncthread2, "syncthread2");
thread1.start();
thread2.start();

class classname 

}}

/**

* 同步執行緒
*/class syncthread implements runnable 
public
static
void
method() catch (interruptedexception e) }}
}public
synchronized
void
run() 
}

Java執行緒同步問題synchronized

android usb 讀寫以前都是一讀一寫，但有些機器會出問題。就採用讀寫非同步的方法。使用物件鎖，object自帶的，然後使用object的方法wait和notify notifyall 使用方法簡單，記錄下 public synchronized int lra setregister int...

Java學習之執行緒鎖 synchronized

同步 併發 多個執行緒訪問同乙份資源 確保資源安全 執行緒安全 synchronized 同步 1 同步塊 synchronized 引用型別 this 類.class 2 同步方法 public synchronized void test public class testsyn class t...

Java中equalsIgnoreCase的用法

equalsignorecase public boolean equalsignorecase string anotherstring 將此 string 與另乙個 string 進行比較，不考慮大小寫。如果兩個字串的長度相等，並且兩個字串中的相應字元都相等 忽略大小寫 則認為這兩個字串是相等的...