orig.java

来自「是一款用JAVA 编写的编译器 具有很强的编译功能」· Java 代码 · 共 61 行

/*
 * Copyright 2005-2007 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

/**
 * @test
 * @bug     6227936
 * @summary Wrong type of inherited method using specialized type parameter
 * @compile/fail Orig.java
 */

class GenericTest {
    static class A<T extends B> {
        T myB;
        A(T myB) {this.myB = myB;}
        T getB() {return myB;}
    }
    static class B<T extends C> {
        T myC;
        B(T myB) {this.myC = myC;}
        T getC() {return myC;}
    }
    static class C {
        C() {}
    }

    static class A1<T extends B1> extends A<T> {
        A1(T myB) {super(myB);}
        public void testMethod() {
            // This next line fails, but should work
            getB().getC().someMethod();
            ((C1)getB().getC()).someMethod();
        }
    }
    static class B1<T extends C1> extends B<T> {
        B1(T myC) {super(myC);}
    }
    static class C1 extends C {
        public void someMethod() {}
    }
}