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多項選擇題

Which two changes, taken together, would guarantee the output: 1, 2, 3, 4, 5?()

A.move the line 12 print statement into the foo() method
B.change line 7 to public synchronized void go(){
C.change the variable declaration on line 2 to private volatile int x;
D.wrap the code inside the foo() method with a synchronized(this) block
E.wrap the for loop code inside the go() method with a synchronized block synchronized(this){//for loop code here}

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