In the HashMap, we know the values but we dont know the key, then how can we get the key from HashMap ?????
4 7600What is the differenc between Enemuration interface and iterator interface according to accessing?
4 6757In the first round, there are 30 aptitude and 30 java questions. We are suppose to finish both the papers within 60 minutes. I cleared this round. Next was test for programming skills. In this section, Some 7 n's were asked. 1. What is the difference b/w sleep(1000) and wait(1000) 2. what is the diff b/w static block and static function? 3. Write a program to validate IP address using string tokenizer. 4. Write a program to create singleton class 5. write a function to reverse the string 6. Write a prog to print prime nos upto n. EX: If n=9, It shld print 1,2,3,5,7 7. One program on collections- Write a program to print no. of times a number is repeating in an array. EX- {1,3,1,2,5,7,3,7,34,3,8,3} It should print: 1- 2 times 3- 4 times and so on 7. Write a func to print fibonocci series After this I had technical interview, which went on for. 60 mins or so. There were qn's about multi threading, Exception handling and collection classes. Knowledge about collections was very important for the post I was interviewed for.
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What is the synchronized method modifier?
Can final class have constructor?
Why is it called a string?
What are parsing rules?
What do you mean by Function Overloading in java?
Explain yield() method in thread class ?
Is zero a natural number?
How do you execute a thread in java?
Which collection is best for sorting in java?
Is map ordered in java?
What is data structure in java?
Why wait(),notify(),notifyAll() methods defined in Object class althought we are using in only threads.
what is thread? What are the high-level thread states? Or what are the states associated in the thread? : Java thread
Why string objects are immutable in java?
What is incompatible types in java?
