In my code I open my file.java and parse him with JavaParser.
FileInputStream in = new FileInputStream(".../file.java");
CompilationUnit cu;
try {
// parse the file
cu = JavaParser.parse(in);
} finally {
in.close();
}
........
file.java:
public class File{
public void ownMethod(){...}
public static void main(String[] args){
ownMethod(5); //Note the extra parameter
}
}
In file.java there is an error: The method main
calls the method ownMethod
with one parameter, but ownMethod
expects 0 parameters. JavaParser doesn't detect this error and parses file.java with this error. How can I know (in my code) whether file.java has no errors? Is it posible without using a java compiler?
No. Any solution, which your (re?)invent, will lead you to yet-another-one compiler. Parse & validate for errors is an essential part of compiler's job.