How does "this" escape the constructor in Java? -

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मैंने अनावश्यक रूप से निर्मित ऑब्जेक्ट्स के कारण गैर धागा-सुरक्षित कोड में यह हो रहा है गेट्स की किताब में पढ़ने के बाद भी, मुझे वास्तव में अवधारणा नहीं है। मैं इस कोड की गंध की मेरी समझ को मजबूत करना चाहूंगा क्योंकि मैं शायद यह कर रहा हूं और यह भी महसूस नहीं कर रहा हूं। कृपया इसे छड़ी करने के लिए अपने स्पष्टीकरण में कोड प्रदान करें, धन्यवाद।

वाकई सरल उदाहरण: 

  सार्वजनिक वर्ग की परीक्षा {निजी स्थिर परीक्षण lastCreatedInstance; सार्वजनिक टेस्ट () {अंतिम क्रांतिकारी = यह; }}

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