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Java > Open Source Codes > edu > rice > cs > util > ClassPathVector


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33
34 package edu.rice.cs.util;
35
36 import java.net.URL JavaDoc;
37 import java.net.MalformedURLException JavaDoc;
38 import java.io.File JavaDoc;
39 import java.util.ArrayList JavaDoc;
40
41 /** A vector of classpath entries. Basically just a ArrayList<URL>, except with additional logic to format the toString
42  * to be suitable for passing to invocations of java -classpath ... . Like ArrayList, this class is not thread safe.
43  */
44 public class ClassPathVector extends ArrayList JavaDoc<URL JavaDoc> {
45   
46   public ClassPathVector() { }
47   
48   public ClassPathVector(int capacity) { super(capacity); }
49   
50   public String JavaDoc toString() {
51     final StringBuilder JavaDoc cp = new StringBuilder JavaDoc();
52     for(URL JavaDoc u : this) {
53       cp.append(formatURL(u));
54       cp.append(File.pathSeparator);
55     }
56     return cp.toString();
57   }
58   
59   /* Adds specified URL to this; malformed URL's are ignored. */
60   public void add(String JavaDoc entry) {
61     try {
62       this.add(new URL JavaDoc(entry));
63     } catch(MalformedURLException JavaDoc e) {
64 // IllegalArgumentException ee = new IllegalArgumentException(e.toString());
65 // ee.initCause(e);
66 // throw ee;
67 }
68   }
69   
70   /* Adds specified URL to this; malformed URL's are ignored. */
71   public void add(File JavaDoc entry) {
72     try { add(FileOps.toURL(entry)); }
73     catch(MalformedURLException JavaDoc e) {
74 // IllegalArgumentException ee = new IllegalArgumentException(e.toString());
75 // ee.initCause(e);
76 // throw ee;
77 }
78   }
79   
80   public ArrayList JavaDoc<File JavaDoc> asFileVector() {
81     ArrayList JavaDoc<File JavaDoc> v = new ArrayList JavaDoc<File JavaDoc>();
82     for(URL JavaDoc url : this) { v.add(new File JavaDoc(url.getFile())); }
83     return v;
84   }
85   
86   private String JavaDoc formatURL(URL JavaDoc url) { return new File JavaDoc(url.getFile()).toString(); }
87 }
88
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