chainedassignment.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 92 行

/*
 * Copyright 1998-2001 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 4098316 4522720
 * @summary Test chained assignments using access methods.
 * @author William Maddox (maddox)
 *
 * @compile ChainedAssignment.java
 * @run main ChainedAssignment
 */

public class ChainedAssignment {

    private int a = 0;
    private int b = 0;
    private int c = 0;

    static private int sa = 0;
    static private int sb = 0;
    static private int sc = 0;
    
    private class Inner {

	void test1() throws Exception {
	    (a) = (b) = 1;
	    if (a != 1 || b != 1) {
		throw new Exception("FAILED (11)");
	    }
	    System.out.println(a + " " + b + " " + c);
	    a = b = c;
	    if (a != 0 || b != 0) {
		throw new Exception("FAILED (12)");
	    }
	    System.out.println(a + " " + b + " " + c);
	    a = (b) += 5;
	    if (a != 5 || b != 5) {
		throw new Exception("FAILED (13)");
	    }
	    System.out.println(a + " " + b + " " + c);
	}

	void test2() throws Exception {
	    sa = sb = 1;
	    if (sa != 1 || sb != 1) {
		throw new Exception("FAILED (21)");
	    }
	    System.out.println(sa + " " + sb + " " + sc);
	    sa = sb = sc;
	    if (sa != 0 || sb != 0) {
		throw new Exception("FAILED (22)");
	    }
	    System.out.println(sa + " " + sb + " " + sc);
	    sa = sb += 5;
	    if (sa != 5 || sb != 5) {
		throw new Exception("FAILED (23)");
	    }
	    System.out.println(sa + " " + sb + " " + sc);
	}

    }

    public static void main(String[] args) throws Exception {
	ChainedAssignment outer = new ChainedAssignment();
	Inner inner = outer.new Inner();
	inner.test1();
	inner.test2();
    }

}