Therefore, any statement within this method that comes after the return statement cannot be executed, resulting in an error message. A programming structure that implements iteration is called a loop. 3 unconditionally exits the factorial method. Iteration means executing the same block of code over and over, potentially many times. The sum of the odd numbers in the array is: 762įigure 2: Unreachable statement after a continue statement (a) error and (b) resolution LoopPeelingPhase is an optimization that moves first or last loop. ("\nThe sum of the odd numbers in the array is: " oddSum) DeadCodeEliminationPhase tries to remove unused (i.e., dead) code from a program. ![]() Java for loop provides a concise way of writing the loop structure. ("Skipping " integer " because it's even") Loops in Java come into use when we need to repeatedly execute a block of statements. To address this issue, the control flow needs to be restructured and the unreachable statement removed, or moved outside the enclosing block, as shown in Fig. 1(a) is compiled, line 12 raises an unreachable statement error because the break statement exits the for loop and the successive statement cannot be executed. The solution was not nor will ever be posted since it is not evaluated. Any statement that follows immediately after a branching statement is, by default, unreachable. Dead code on a nested for loop that returns a boolean Ask Question Asked 4 years, 6 months ago Modified 4 years, 6 months ago Viewed 582 times 0 I am trying to complete an exercise that we received in class. The break statement allows breaking out of a loop, the continue statement skips the current iteration of a loop, and the return statement exits a method and returns the execution flow to where the method was invoked. The break, continue, and return branching statements allow the flow of execution to jump to a different part of the program. Unreachable Statement Error Examples After a branching control-flow statement Or, public static boolean isCat(String s, String x). If it finds a statement for which there is no such path, the compiler raises the unreachable statement error. Because your loop will return true or false before the increment step. What Causes the Unreachable Statement Error?īy performing semantic data flow analysis, the Java compiler checks that every statement is reachable and makes sure that there exists an execution path from the beginning of a constructor, method, instance initializer, or static initializer that contains the statement, to the statement itself. One such error, related to statements, is the unreachable statement error. Īs a compiled programming language, Java has an inbuilt mechanism for preventing many source code errors from winding up in executable programs and surfacing in production environments. In Java, there are three main types of statements, namely expression statements, declaration statements, and control-flow statements. Statements are similar to sentences in natural languages. Statements are foundational language constructs that have an effect on the execution of a program. ![]() When the compiler compiles the whole body of code and make byte code according to your code, it. Introduction to Statements and Compile-time Errors in Java print(inside infinite loop) code can never be reached with.
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