34 lines
811 B
Java
34 lines
811 B
Java
//: generics/InstantiateGenericType.java
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import static net.mindview.util.Print.*;
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class ClassAsFactory<T> {
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T x;
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public ClassAsFactory(Class<T> kind) {
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try {
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x = kind.newInstance();
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} catch(InstantiationException |
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IllegalAccessException e) {
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throw new RuntimeException(e);
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}
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}
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}
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class Employee {}
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public class InstantiateGenericType {
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public static void main(String[] args) {
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ClassAsFactory<Employee> fe =
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new ClassAsFactory<>(Employee.class);
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print("ClassAsFactory<Employee> succeeded");
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try {
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ClassAsFactory<Integer> fi =
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new ClassAsFactory<>(Integer.class);
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} catch(Exception e) {
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print("ClassAsFactory<Integer> failed");
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}
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}
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} /* Output:
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ClassAsFactory<Employee> succeeded
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ClassAsFactory<Integer> failed
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*///:~
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