53 lines
997 B
Plaintext
53 lines
997 B
Plaintext
By contract, the method ``++Object.wait(...)++``, ``++Object.notify()++`` and ``++Object.notifyAll()++`` should be called by a thread that is the owner of the object's monitor. If this is not the case an ``++IllegalMonitorStateException++`` exception is thrown. This rule reinforces this constraint by making it mandatory to call one of these methods only inside a ``++synchronized++`` method or statement.
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== Noncompliant Code Example
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----
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private void removeElement() {
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while (!suitableCondition()){
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obj.wait();
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}
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... // Perform removal
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}
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----
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or
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----
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private void removeElement() {
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while (!suitableCondition()){
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wait();
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}
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... // Perform removal
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}
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----
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== Compliant Solution
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----
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private void removeElement() {
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synchronized(obj) {
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while (!suitableCondition()){
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obj.wait();
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}
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... // Perform removal
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}
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}
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----
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or
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----
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private synchronized void removeElement() {
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while (!suitableCondition()){
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wait();
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}
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... // Perform removal
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}
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----
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