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1 package com.sun.org.apache.bcel.internal.util;
2
3
56
57 import java.lang.reflect.*;
58
59
75 public class JavaWrapper {
76 private java.lang.ClassLoader  loader;
77
78 private static java.lang.ClassLoader getClassLoader() {
79 String s = System.getProperty("bcel.classloader");
80
81 if((s == null) || "".equals(s))
82 s = "com.sun.org.apache.bcel.internal.util.ClassLoader";
83
84 try {
85 return (java.lang.ClassLoader )Class.forName(s).newInstance();
86 } catch(Exception e) {
87 throw new RuntimeException (e.toString());
88 }
89 }
90
91 public JavaWrapper(java.lang.ClassLoader loader) {
92 this.loader = loader;
93 }
94
95 public JavaWrapper() {
96 this(getClassLoader());
97 }
98
99
104 public void runMain(String class_name, String [] argv) throws ClassNotFoundException
105 {
106 Class cl = loader.loadClass(class_name);
107 Method method = null;
108
109 try {
110 method = cl.getMethod("_main", new Class [] { argv.getClass() });
111
112
114 int m = method.getModifiers();
115 Class r = method.getReturnType();
116
117 if(!(Modifier.isPublic(m) && Modifier.isStatic(m)) ||
118 Modifier.isAbstract(m) || (r != Void.TYPE))
119 throw new NoSuchMethodException ();
120 } catch(NoSuchMethodException no) {
121 System.out.println("In class " + class_name +
122 ": public static void _main(String[] argv) is not defined");
123 return;
124 }
125
126 try {
127 method.invoke(null, new Object [] { argv });
128 } catch(Exception ex) {
129 ex.printStackTrace();
130 }
131 }
132
133
136 public static void _main(String [] argv) throws Exception {
137
139 if(argv.length == 0) {
140 System.out.println("Missing class name.");
141 return;
142 }
143
144 String class_name = argv[0];
145 String [] new_argv = new String [argv.length - 1];
146 System.arraycopy(argv, 1, new_argv, 0, new_argv.length);
147
148 JavaWrapper wrapper = new JavaWrapper();
149 wrapper.runMain(class_name, new_argv);
150 }
151 }
152
153 |
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