1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal.cmd; 27 28 import java.util.Arrays; 29 import java.util.Deque; 30 import java.util.LinkedList; 31 32 /** 33 * Launcher class for JFR tools 34 * 35 */ 36 public final class Execute { 37 38 public static void main(String... args) { 39 Deque<String> argList = new LinkedList<>(Arrays.asList(args)); 40 if (argList.isEmpty()) { 41 System.out.println(); 42 Command.displayHelp(); 43 return; 44 } 45 String command = argList.remove(); 46 for (Command c : Command.getCommands()) { 47 if (c.getName().equals(command)) { 48 try { 49 c.execute(argList); 50 } catch (IllegalArgumentException iae) { 51 return; // already handled by command 52 } catch (Throwable e) { 53 System.out.println(); 54 System.out.println(e.getMessage()); 55 System.out.println(); 56 } 57 return; 58 } 59 } 60 System.out.println(); 61 System.out.println("Unknown command " + command + "."); 62 System.out.println(); 63 Command.displayHelp(); 64 } 65 }