Can optional be null?
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I am new to jsf rich faces. I am using rich faces datatable rich:datatable. On entering the value, values get filtered in table. Now how can i get the value i selected in backing bean?
What is the point of lambda expressions?
why i can not access private variable in other class?
Spring framework ---Can somebody explain me in easily understandable format about AOP, IOC and DI, so that i can explain in interview rather than just telling what is available in net. I am not able to understand that also. I am new to Spring
What is xml file in java?
How to implement Hash Map?
i heard that JVM internally contains pointers...is this true?
What is transient in java?
Who developed rxjava?
When is static variable loaded? Is it at compile time or runtime? When exactly a static block is loaded in java?
Is openjdk the same as jdk?
What if the main method is declared as private?