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Is it possible to write JAVA program without including any of the packages,such as "import java.io.*"; bcoz I instantly wrote a code without "import..." statement and runned the program on command Line & it worked. the code is: class Person { String name; int age; Person(String s,int a) { name = s; age = a; } accept() { System.out.println(name+"Hi!!!!!"); System.out.println(age); } } class Demo { public static void main(Strings args[])throws IOException { String name = args[0]; int age = Integer.parseInt(args[1]); Person p = new Person(name,age); p.accept(); } }
3 53421) There are 10 different threads in runnable state. Each having priority 1 to 10. How does the CPU schedules or executes these threads?
RBS,
2 71042) Suppose there are 5 directories having lot of files (say txt files) in each directory. 2 things :- 2.1) You want to search for filenames which have a particular pattern. 2.2) Out of these filtered files you want to search for a particular keyword or a search string. How can you achieve this?
22853) Suppose you are a very rich person, having 50 rooms and you have lost the key for one of the room's. How effectively you can find this key? (Qs2 and Qs3 are related)
RBS,
3 8899Suppose there is a System A which gives some output. This output is used as input by system B. The rate at which System A produces is faster than the rate at which system B consumes it. How can you improve this?
RBS,
1 5764Suppose there is an Online shopping cart application having different objects like Cart, SelectionItem, Billing, COnfiguration, Authentication, Authorization, PersonalDetails etc. Out of this which one can be made a singleton pattern and why?
RBS,
2 107377) Suppose there is Student class like class student { int age; string name; } We want to store these objects in a HashMap. Do we need to override any methods in Student class? If any which ones and why? what if i just override equals or just hashcode? what will be the results in both the cases?
4 9351
Can you explain the final method modifier?
Is finalize() similar to a destructor?
Why are generics used?
What are nested classes in java?
What is a cup of java?
Can a vector contain heterogenous objects?
What is java ceil?
What is the reason behind using constructors and destructors?
Define packages in java?
Why string is called as immutable?
Is ruby built on java?
Where is java located?
How is treeset implemented in java?
What are synchronized blocks in java?
What are the two types of streams offered by java 8?
