What is unreachable statement?

What is unreachable statement?

The Unreachable statements refers to statements that won’t get executed during the execution of the program are called Unreachable Statements. These statements might be unreachable because of the following reasons: Have a return statement before them. Any statements after throwing exception in a try block.

How do you fix unreachable statements in java?

If you want your print to go through, you should move it above the return statement. If you keep any statements after the return statement those statements are unreachable statements by the controller. By using return statement we are telling control should go back to its caller explicitly .

Why is unreachable code an error java?

If any code can not be executable in any of the possible flows, then it is called unreachable code. Unreachable code in java is a compile time error. In this example, Line 14 gives compile time error : Unreachable Code. Because this statement can not be reached in any of the flows.

What is reachable or unreachable code?

From Wikipedia, the free encyclopedia. In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program.

Where is unreachable code in testing?

While some simple cases of unreachable code can be detected by static analysis (typically if a condition in an if statement can be determined to be always true or false), most cases of unreachable code can only be detected by performing coverage analysis in testing, with the caveat that code reported as not being …

What makes code unreachable?

In computer programming, unreachable code is part of the source code of a program which can never be executed because there exists no control flow path to the code from the rest of the program.

What is unreachable catch block error?

A block of statements to which the control can never reach under any case can be called as unreachable blocks. Unreachable blocks are not supported by Java. The catch block mentioned with the reference of Exception class should and must be always last catch block because Exception is the superclass of all exceptions.

How can we detect unreachable code?

What is unreachable code detected?

What does it mean when a statement is unreachable?

Any Idea? It is a compile-time error if a statement cannot be executed because it is unreachable. This means that the control flow of your program can’t get to that statement, but you assume that they would be. The compiler analyzes the flow, and reports these statements to you as error messages.

What does it mean when a Java program is unreachable?

It is a compile-time error if a statement cannot be executed because it is unreachable. This means that the control flow of your program can’t get to that statement, but you assume that they would be. The compiler analyzes the flow, and reports these statements to you as error messages.

What does it mean when a compile time error is unreachable?

It means the compiler checks that every statement is reachable. It is a compile-time error if a statement cannot be executed because it is unreachable. This section is devoted to a precise explanation of the word “reachable.”

Why are any statements after the continue keyword unreachable?

Any statement after writing continue : If we add any statements in a loop after writing the continue keyword, those statements are unreachable because execution jumps to the top of the for loop. The lines immediately after the continue is not executed.