What is variable explain?
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Is nan false?
What is the differences between heap and stack memory in java? Explain
System.out & System.in are final static data member of System class but we can change there reference through setOut() & setIn() method how...
Given: 10. interface A { void x(); } 11. class B implements A { public void x() { } public voidy() { } } 12. class C extends B { public void x() {} } And: 20. java.util.List list = new java.util.ArrayList(); 21. list.add(new B()); 22. list.add(new C()); 23. for (A a:list) { 24. a.x(); 25. a.y();; 26. } What is the result? 1 Compilation fails because of an error in line 25. 2 The code runs with no output. 3 An exception is thrown at runtime. 4 Compilation fails because of an error in line 20.
What are the advantages of java?
What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?
What class of exceptions are generated by the java run-time system?
In what types of operations an ArithmeticException will be thrown?
How we can run a jar file through command prompt in java?
java Technical questions asked by JPMC
What is the purpose of using javap?
Explain about map interface in java?