Does treeset allow null in java?
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What is :: operator in java 8?
What is the difference between path and classpath variables?
Is 0 a real number?
How to add and remove nodes in Jtree?
What is the differnence between String Buffer and String builder despite having knowledge that String builder is faster than String Buffer and last one is threadsafe.please tell another important difference.
What is the difference between stringbuffer and stringbuilder?
Which Math method is used to calculate the absolute value of a number?
Where import statement is used in a java program?
How does the garbage collector works in java?
Can we store variables in local blocks?
What does indexof mean?
How do you implement polymorphism in our day to day life?