You could do something like this:
public void printFields(Object obj) throws Exception {
Class<?> objClass = obj.getClass();
Field[] fields = objClass.getFields();
for(Field field : fields) {
String name = field.getName();
Object value = field.get(obj);
System.out.println(name + ": " + value.toString());
}
}
This would only print the public fields, to print private fields use class.getDeclaredFields recursively.
Or if you would extend the class:
public String toString() {
try {
StringBuffer sb = new StringBuffer();
Class<?> objClass = this.getClass();
Field[] fields = objClass.getFields();
for(Field field : fields) {
String name = field.getName();
Object value = field.get(this);
sb.append(name + ": " + value.toString() + "\n");
}
return sb.toString();
} catch(Exception e) {
e.printStackTrace();
return null;
}
}