Is there a way to access a class variable without knowing its name?

I'm trying to use getObjectField(Object obj, String fieldName) to get the value of a class variable,
However I cannot get the real fieldName of that variable after decompilation:

public final class fR
{
public final fT a;
public final CharSequence a;
public final Object a;
public final String a; //this is the variable I want to access
public final CharSequence b;

....


Is there a way to access a class variable without knowing its name?

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