/* * Copyright (c) 2001, 2005, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
/* * @test * @compile Constants.java * @bug 4397405 4826652 * @summary Testing constant-ness of Float.{MIN_VALUE, MAX_VALUE}, etc. * @author Joseph D. Darcy
*/
publicclass Constants { /* * This compile-only test is to make sure that the primitive * public static final fields in java.lang.Float are "constant * expressions" as defined by "The Java Language Specification, * 2nd edition" section 15.28; a different test checks the values * of those fields.
*/ publicstaticvoid main(String[] args) throws Exception { int i = 0; switch (i) { case (int)Float.NaN: // 0
System.out.println("Float.NaN is a constant!"); break; case (int)Float.MIN_VALUE + 1: // 0 + 1
System.out.println("Float.MIN_VALUE is a constant!"); break; case (int)Float.MIN_NORMAL + 2: // 0 + 2
System.out.println("Float.MIN_NORMAL is a constant!"); break; caseFloat.MIN_EXPONENT: // -126
System.out.println("Float.MIN_EXPONENT is a constant!"); break; caseFloat.MAX_EXPONENT: // 127
System.out.println("Float.MAX_EXPONENT is a constant!"); break; case (int)Float.MAX_VALUE - 1: // Integer.MAX_VALUE - 1
System.out.println("Float.MAX_VALUE is a constant!"); break; case (int)Float.POSITIVE_INFINITY: // Integer.MAX_VALUE
System.out.println("Float.POSITIVE_INFINITY is a constant!"); break; case (int)Float.NEGATIVE_INFINITY: // Integer.MIN_VALUE
System.out.println("Float.NEGATIVE_INFINITY is a constant!"); break;
}
}
}
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