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What cannot be done without using static keyword in java?

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Static keyword is used both at method and variable level. It is generally used for sharing to all the methods. It is also used for static block s.
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You cannot create the instance of the class if the class is static. Also if the class members are static then its value cannot be changed.
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static is a keyword which is used to define main() method in java. and if we do not define it with static then main method invocation needs an object to be called, which we generally do not do, like obj.main(). With static keyword, object is not required to invoke main() or any other method. So because...
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static is a keyword which is used to define main() method in java. and if we do not define it with static then main method invocation needs an object to be called, which we generally do not do, like obj.main(). With static keyword, object is not required to invoke main() or any other method. So because main() is static that is why your program execution starts from main() method read less
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