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HCL Core Java Interview Questions
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string is immutable? right every one knows that, my question is it advantage or disadvantage making string immutable?
5 10715StringBuilder s = new StringBuilder("Hello Mom");s.append(",I mean,Mother"); Response.Write(s.ToString()); String s = "Hello Mom"; s+ = ",I mean Mom"; Response.Write(s); Which is faster ? which uses the most memory?
6 8782In method overloading ,if i change the return type to Long instead of INT,is the program execute
6 11542why use interface? if interface declear a method implement in class. why direct implement method in class
1 2724There can be a abstract class without abstract methods, but what is the need to declare a class abstract if it doesn't contain abstract methods?
5 9007Post New HCL Core Java Interview Questions
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