Which statement is true about the "switch" construct?

Which class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

Which statement is true for below code:- String s1 = 'UpWork'; String s2 = 'UpWork'; StringBuilder sb1 = new StringBuilder(); sb1.append('Up').append('Work'); System.out.println(s1 == s2); System.out.println(s1.equals(s2)); System.out.println(sb1.toString() == s1); System.out.println(sb1.toString().equals(s1));

What will be the value of a? let a = -1 ? 'foo' ? null : -1 : 1;

Which snippet of code can be used to instantiate an object?

What is the purpose of a class constructor?

Output of the following code? int three = 3; String four = '4'; System.out.println(1 + 2 + three + four);

Which of these packages contain all the Java's built in exceptions?

Which methods wait for the thread to terminate?

Output of the following program? Class Upwork{ Public static void main(string args[]) { Byte x = 64; Int I; Byte y; i = x << 2 y = (byte) (x << 2) system.out.print(I + '' + y); } }

Which type(s) cannot be used as generics?