How to convert string to char and vice versa?
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when asub class inherits a super class and overrides a public method of super class in sub class(public method in super class). why these methods needs to be public in sub class. (otherwise compile time error).
Why do we need hashmap in java?
What is the difference between sop and work instruction?
Why we override equals() method?
What is a key in java?
You can create a string object as string str = “abc”; why cant a button object be created as button bt = “abc”;? Explain
Explain method overloading?
Java Compiler is stored in JDK, JRE or JVM?
Which api is provided by java for operations on set of objects?
How to create a custom exception?
What are aggregate functions explain with examples?
Can you explain the usages of class.forname()?