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58 lines
957 B
58 lines
957 B
/*
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* Copyright (c) 2015 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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package codetoanalyze.java.tracing;
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interface I {
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T get();
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}
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class A implements I {
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public T get() {
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return new T();
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}
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}
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class B extends A {
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public T get() {
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return null;
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}
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}
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public class LazyDynamicDispatchExample {
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static T fromSupertype(A a) {
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return a.get();
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}
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static T fromInterface(I i) {
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return i.get();
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}
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static void callWithSubtype() {
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B b = new B();
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fromSupertype(b).f();
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}
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static void shouldNotReportLocalVarTypeIsKnown() {
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A a = new A();
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fromInterface(a).f();
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}
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static void shouldReportLocalVarTypeIsKnown() {
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B b = new B();
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fromInterface(b).f();
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}
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}
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