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While working with Java in eclipse I got a warning saying "dead code". What does it mean?
A code block/statement in Java to which the control never reaches and never gets executed during the lifetime of the program is known as unreachable block/statement.
public class UnreachableCodeExample {
public String greet() {
System.out.println("This is a greet method ");
return "Hello";
System.out.println("This is an unreachable code ");
}
public static void main(String args[]) {
new UnreachableCodeExample().greet();
}
}Dead code
A dead code is an unreachable code, but it doesn’t generate compile time error. But if you execute it in eclipse it gives you a warning.
Example
In the following Java program
public class UnreachableCodeExample {
public void greet() {
System.out.println("This is the greet method ");
if(true){
return;
}
System.out.println("This is a dead code ");
}
public static void main(String args[]) {
new UnreachableCodeExample().greet();
}
}Output
This is the greet method
If you run the same program in eclipse it raises a warning as −
Updated on: 29-Jun-2020
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