How do you achieve singleton?

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there are some duplicate values in ArrayList, how U'll get that array with out duplicate?

4 Answers   CMC,

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Is class is a data type?

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Explain the advantages of packages in java?

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What is parsing in java?

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How do you relate a Interface to a Class? Tell me in Detail?

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84. try { 85. ResourceConnection con = resourceFactory.getConnection(); 86. Results r = con.query(”GET INFO FROM CUSTOMER”); 87. info = r.getData(); 88. con.close(); 89. } catch (ResourceException re) { 90. errorLog.write(re.getMessage()); 91. } 92. return info; Which is true if a ResourceException is thrown on line 86? 1 Line 92 will not execute. 2 The connection will not be retrieved in line 85. 3 The resource connection will not be closed on line 88. 4 The enclosing method will throw an exception to its caller.

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What's the default access specifier for variables and methods of a class?

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What are the benefits of operations in java?

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Why do we need hashset in java?

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What is boolean query?

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Can we have more than one package statement in source file ?

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