clown.java

来自「hhe example may be useflu」· Java 代码 · 共 51 行

/*
* Copyright (c) 1997-1999 Bill Venners. All rights reserved.
*
* Source code file from the book "Inside the Java 2 Virtual Machine,"
* by Bill Venners, published by McGraw-Hill, 1999, ISBN: 0-07-135093-4. 
*
* This source file may not be copied, modified, or redistributed
* EXCEPT as allowed by the following statements: You may freely use
* this file for your own work, including modifications and distribution
* in compiled (class files, native executable, etc.) form only. You may
* not copy and distribute this file. You may not remove this copyright
* notice. You may not distribute modified versions of this source file.
* You may not use this file in printed media without the express
* permission of Bill Venners. 
*
* BILL VENNERS MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE
* SUITABILITY OF THIS SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT. BILL VENNERS SHALL NOT
* BE LIABLE FOR ANY DAMAGES SUFFERED BY A LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/

// On CD-ROM in file opcodes/ex1/Clown.java
class Clown {

    static int hopAround() {
        int i = 0;
        while (true) {
            try {
                try {
                    i = 1;
                }
                finally {  // The first finally clause
                    i = 2;
                }
                i = 3;
                // This return never completes, because of
                // the continue in the second finally clause
                return i;
            }
            finally {      // The second finally clause
                if (i == 3) {
                     // This continue overrides the return statement
                    continue;
                }
            }
        }
    }
}