64 lines
2.6 KiB
Java
64 lines
2.6 KiB
Java
/*
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* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4459133
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* @summary Forward reference legal or illegal?
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* @author gafter
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*
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* @compile UseBeforeDeclaration.java
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*/
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class UseBeforeDeclaration {
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static {
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x = 100; // ok - assignment
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// int y = ((x)) + 1; // error - read before declaration
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int v = ((x)) = 3; // ok - x at left hand side of assignment
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int z = UseBeforeDeclaration.x * 2; // ok - not accessed via simple name
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Object o = new Object(){
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void foo(){x++;} // ok - occurs in a different class
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{x++;} // ok - occurs in a different class
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};
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}
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{
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j = 200; // ok - assignment
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// j = j + 1; // error - right hand side reads before declaration
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// int k = j = j + 1; // error - right hand side reads before declaration
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int n = j = 300; // ok - j at left hand side of assignment
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// int h = j++; // error - read before declaration
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int l = this.j * 3; // ok - not accessed via simple name
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Object o = new Object(){
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void foo(){j++;} // ok - occurs in a different class
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{ j = j + 1;} // ok - occurs in a different class
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};
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}
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int w = x= 3; // ok - x at left hand side of assignment
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int p = x; // ok - instance initializers may access static fields
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static int u = (new Object(){int bar(){return x;}}).bar(); // ok - occurs in a different class
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static int x;
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int m = j = 4; // ok - j at left hand side of assignment
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int o = (new Object(){int bar(){return j;}}).bar(); // ok - occurs in a different class
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int j;
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}
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