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String class provides us with the method String.valueOf(some stuff) that basically converts "some stuff" into a string.. But we can also concatenate "some stuff" with an empty String (""). Both these methods result in a String representation of an object(or other data type) so my question is what is the … 
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Could anyone give some info on the printf() method.. I know we can put %d and %s in the format argument so that it takes a string data type and a decimal data type but apart from that are there any other uses of printf()? some simple examples will do …
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When i write in my program double pi = Math.PI; This will give me a value of PI accurate to many decimal places, but what if i want to limit this number lets say to 3 decimal places.. [b]Is there such a method in Java? [/b] (Im not talking here …
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Can anyone outline the use of the keyword "instanceof". I mean, when do we use it etc.. Couple of examples would make it clearer i guess...
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