I want to get only the class level variable declarations. How can i get the declarations using javaparser?
public class Login {
private Keyword browser;
private String pageTitle = "Login";
}
Using javaparser have to get the details of variable "browser" like the type of browser is "KeyWord"
Not quite sure i understood your question - do you want to get all the field-members of a class? if so you can do it like this:
CompilationUnit cu = JavaParser.parse(javaFile);
for (TypeDeclaration typeDec : cu.getTypes()) {
List<BodyDeclaration> members = typeDec.getMembers();
if(members != null) {
for (BodyDeclaration member : members) {
//Check just members that are FieldDeclarations
FieldDeclaration field = (FieldDeclaration) member;
//Print the field's class typr
System.out.println(field.getType());
//Print the field's name
System.out.println(field.getVariables().get(0).getId().getName());
//Print the field's init value, if not null
Object initValue = field.getVariables().get(0).getInit();
if(initValue != null) {
System.out.println(field.getVariables().get(0).getInit().toString());
}
}
}
This code example will print in your case: Keyword browser String pageTitle "Login"
I hope this was really your question... if not, please comment.
To update the above answer to the latest version of JavaParser:
CompilationUnit cu = JavaParser.parse("public class Login {\n" +
"\n" +
" private Keyword browser;\n" +
" private String pageTitle = \"Login\";\n" +
"}\n");
for (TypeDeclaration<?> typeDec : cu.getTypes()) {
for (BodyDeclaration<?> member : typeDec.getMembers()) {
member.toFieldDeclaration().ifPresent(field -> {
for (VariableDeclarator variable : field.getVariables()) {
//Print the field's class typr
System.out.println(variable.getType());
//Print the field's name
System.out.println(variable.getName());
//Print the field's init value, if not null
variable.getInitializer().ifPresent(initValue -> System.out.println(initValue.toString()));
}
});
}
}
and a way to get to the field declarations without as much hassle is...
cu.findAll(FieldDeclaration.class).forEach(field -> {
field.getVariables().forEach(variable -> {
//Print the field's class typr
System.out.println(variable.getType());
//Print the field's name
System.out.println(variable.getName());
//Print the field's init value, if not null
variable.getInitializer().ifPresent(initValue -> System.out.println(initValue.toString()));
});
});
The functional difference between the two is that the first one only looks in the top level class, and the second one will also look in nested classes.
