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1
55
56 package org.apache.bsf.util;
57
58 import java.util.Hashtable  ;
59 import java.io.*;
60
61
67 class BSFClassLoader extends ClassLoader {
68 Hashtable cache = new Hashtable ();
69 String tempDir = ".";
70
71 BSFClassLoader () {
74 }
75 public synchronized Class loadClass (String name, boolean resolve)
76 throws ClassNotFoundException {
77 Class c = (Class ) cache.get (name);
78 if (c == null) {
79 try {
81 c = findSystemClass (name);
82 cache.put (name, c);
83 return c;
84 } catch (ClassNotFoundException e) {
85 }
87 try {
88 byte[] data = loadClassData (name);
89 c = defineClass (name, data, 0, data.length);
90 cache.put (name, c);
91 } catch (Exception e) {
92 e.printStackTrace ();
93 throw new ClassNotFoundException ("unable to resolve class '" +
94 name + "'");
95 }
96 }
97 if (resolve)
98 resolveClass (c);
99 return c;
100 }
101 private byte[] loadClassData (String name) throws Exception {
102 String fileName = tempDir + File.separatorChar + name + ".class";
103 FileInputStream fi = new FileInputStream (fileName);
104 byte[] data = new byte[fi.available ()];
105 fi.read (data);
106 fi.close();
107 return data;
108 }
109 public void setTempDir (String tempDir) {
110 this.tempDir = tempDir;
111 }
112 }
113 |
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