What is immutable class in java?
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Why there are some null interface in java? What does it mean?
How many bits are allocated to represent character of character sets - Unicode, ASCII, UTF-16, UTF-8?
Why null value is used in string?
How do you declare a string variable?
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Can you sort a string in java?
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List some important features of java 10 release?
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what modifiers are used with top-level class?
what are the rules to use try catch finally?