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Inspecting Objects

• Can obtain object contents at runtime
• Useful for generic debugging tools
• Need to gain access to private fields
  

  Class c = obj.getClass();
  
  Field f = c.getDeclaredField(name);
  
  f.setAccessible(true);
  
  

• Throws exception if security manager disallows access
• Access field value:
  

  Object value = f.get(obj);
  
  f.set(obj, value);
  

• Use wrappers for primitive types

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