Can java hashmap have duplicate keys?
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why use interface? if interface declear a method implement in class. why direct implement method in class
What are desktop procedures?
How many types of constructors are used in java?
What are keywords give examples?
Addition to previous section relative word 5th one was Putrid ans: rotten, also there was prob. in 1st section on bucket weight ans:10kg, also there was a prob. on train speed to find bridge length ans:800 mtrs.
Can we use String with switch case?
What is the ==?
What is an error in java?
what is the use of StringBuffer?
diff between abstract methods and interfaces with programing (code) example?
What is floating data type?
How to compare strings in java?