Get a variable value from the variable name : Field « Reflection « Java

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Java » Reflection » Field Screenshots  Get a variable value from the variable name      import java.lang.reflect.Field; public class Main {   public static void main(String[] args) throws Exception {     Object clazz = new TestClass();     String lookingForValue = "firstValue";     Field field = clazz.getClass().getField(lookingForValue);     Class clazzType = field.getType();     if (clazzType.toString().equals("double"))       System.out.println(field.getDouble(clazz));     else if (clazzType.toString().equals("int"))       System.out.println(field.getInt(clazz));          //System.out.println(field.get(clazz));   } } class TestClass {   public double firstValue = 3.14; }                       Related examples in the same category 1.  Field Reflection 2.  How to set public field objects 3.  Class Reflection: field information 4.  Object Reflection: get field value 5.  Object Reflection: set value 6.  Get field of a class object and set or get its value 7.  All Fields Snippet 8.  Field modifiers: isSynthetic, isEnumConstant 9.  Field with annotations 10.  Set private field value 11.  Get fields of a class object 12.  Get all object accessible public fields 13.  Getting the Field Objects of a Class Object: By obtaining a list of all declared fields. 14.  Getting the Field Objects of a Class Object: By obtaining a list of all public fields, both declared and inherited. 15.  Getting the Field Objects of a Class Object: By obtaining a particular Field object. 16.  Get all declared fields from a class 17.  Retrieving a Predefined Color by Name 18.  Fetches all fields of all access types from the supplied class and super classes 19.  Checks whether the specified class contains a field matching the specified name. 20.  whether given field is a "public static final" constant 21.  Process bean properties getter by applying the JavaBean naming conventions. 22.  Fetches the property descriptor for the named property of the supplied class 23.  Find Field 24.  Return a list of all fields (whatever access status, and on whatever superclass they were defined) that can be found on this class.