2 Round (Virtual)- They asked to write function to add, reverse, print and sort the linkedlist. They asked about ManyToMany mapping and implementation(create Book, Author class). The asked to write a query where there's book and author table and another table Book_Author.. now write a query to fetch all the book name by whose authore.gender == "FEMALE".
3 Round (F2F) - String s1 = new String("xyz");
String s2 = "xyz";
Map m = new HashMap();
m.put(s1,1);
m.put(s2,2);
m.length ???? - 1 why?
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class Employee{
id,
name
}
Map h1 = new HashMap();
Can we have Employee as key here? How? what change we need to do in Employee class? and what will happen if i have 2 same id,name have? ans - hashable(), equals() method..
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How can i sort the map by Employee id ? - Comparator vs Comparable -- Implementation
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Threads... Thread pool.. Executive Framework...
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if I have 5 threads and all of it have task... there's another task come up how will and which thread will be assigned ?
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Internal working of volatile keyword? How does it internally work?
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Clustered vs Non Clustered Index in sql, postgresSQl
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What is the most challenging thing have you done in your job?
