Java Singleton Pattern

Hacker
Rank
Score
81360
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81360
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81360
flag of Indonesia
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81360
flag of Latvia
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81360
flag of India
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81360
flag of India
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81360
flag of Spain
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81360
flag of India
00.00
81360
flag of India
00.00
81360
flag of India
00.00
81360
flag of United States
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81360
flag of Greece
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81360
flag of India
00.00
81360
flag of United Kingdom
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81360
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