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解决一个多线程的bug #148

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解决一个多线程的bug #148

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10 changes: 4 additions & 6 deletions src/main/java/com/github/hcsp/multithread/Counter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -8,18 +8,16 @@ public int getValue() {
}

// 加上一个整数i，并返回加之后的结果
public int addAndGet(int i) {
synchronized (value) {
public void addAndGet(int i) {
synchronized (this) {
value += i;
return value;
}
}

// 减去一个整数i，并返回减之后的结果
public int minusAndGet(int i) {
synchronized (value) {
public void minusAndGet(int i) {
synchronized (this) {
value -= i;
return value;
}
}
}