Which of the following lines of code will compile without error? a) int i=0; if(i) { System.out.println("Hello"); } b) boolean b=true; boolean b2=true; if(b==b2) { System.out.println("So true"); } c) int i=1; int j=2; if(i==1 &| j==2) System.out.println("OK");

To solve this question, the user needs to know the basic syntax of Java programming language such as data types, logical operators, and conditional statements.

a) This option will not compile because the condition inside the if statement is of type integer, whereas Java expects a boolean condition. The condition should be a boolean expression that evaluates to true or false.

b) This option will compile without error. It declares two boolean variables and compares them using the equality operator (==). Since both variables have the same value (true), the condition evaluates to true and the statement inside the if block is executed.

c) This option will not compile because it contains a logical operator error. The logical OR operator in Java is represented by two vertical bars (||), not a single vertical bar followed by an ampersand (|&). The correct expression is (i==1 || j==2).

Therefore, the correct answer is:

The Answer is: B