30 lines
823 B
Java
30 lines
823 B
Java
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//: generics/LostInformation.java
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import java.util.*;
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class Frob {}
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class Fnorkle {}
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class Quark<Q> {}
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class Particle<POSITION,MOMENTUM> {}
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public class LostInformation {
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public static void main(String[] args) {
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List<Frob> list = new ArrayList<Frob>();
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Map<Frob,Fnorkle> map = new HashMap<Frob,Fnorkle>();
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Quark<Fnorkle> quark = new Quark<Fnorkle>();
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Particle<Long,Double> p = new Particle<Long,Double>();
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System.out.println(Arrays.toString(
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list.getClass().getTypeParameters()));
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System.out.println(Arrays.toString(
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map.getClass().getTypeParameters()));
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System.out.println(Arrays.toString(
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quark.getClass().getTypeParameters()));
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System.out.println(Arrays.toString(
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p.getClass().getTypeParameters()));
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}
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} /* Output:
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[E]
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[K, V]
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[Q]
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[POSITION, MOMENTUM]
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*///:~
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