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What is the default initialized value of String type
variable?
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Does string is thread-safe in java?
Which collection is thread safe in java?
What is the relationship difference the canvas class and the graphics class?
How to do validation of the fields in any project ?
What do you know about the garbate collector?
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.
What is difference between filereader and bufferedreader?
What is class variable java?
What does sizeof return?
why static class in java or what is use of static class in java
Can we have a abstract class withought any method? What is a purspose of this?
What is bean? Where it can be used?
Core Java 
