Access array of type integer from Field through java reflection

Question

Say i have this class

public static final class MyClass { 

    public static final int A = 4 ;

    public static final int[] B = { 1, 2, 3, 4 };
}

I have to access above class and its field values through reflections

Class<?> myClass = getDesiredClass("MyClass");

I am able to get the value of A by this

int a = myClass.getField("A").getInt(myClass);

But how to get value of B, what methods of Field should i use?

 int[] b = myClass.getField("B").?

Louis Wasserman · Accepted Answer · 2013-01-08 20:32:09Z

4

An int[] is an Object, so just use (int[]) get(myClass) -- or alternatively, (int[]) get(null), since no argument is needed for static fields.

answered Jan 8, 2013 at 20:32

Louis Wasserman

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Comments

Peter Lawrey · Accepted Answer · 2013-01-08 20:34:15Z

2

All these are equivalent. I would pick the simplest. ;)

int[] b = MyClass.B;
int[] b = (int[]) MyClass.class.getField("B").get(null);
int[] b = (int[]) Class.forName("MyClass").getField("B").get(null);

answered Jan 8, 2013 at 20:34

Peter Lawrey

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1 Comment

amsiddh Over a year ago

Thanks for your quick reply too and detail explanation.

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