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19 package org.apache.myfaces.convert;
20
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28 public final class ConverterUtils
29 {
30
31
32 private ConverterUtils() {}
33
34
35 public static int convertToInt(Object value)
36 {
37 if (value instanceof Number)
38 {
39 return ((Number) value).intValue();
40 }
41 else if (value instanceof String)
42 {
43 try
44 {
45 return Integer.parseInt((String) value);
46 }
47 catch (NumberFormatException e)
48 {
49 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to int");
50 }
51 }
52 else
53 {
54 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to int");
55 }
56 }
57
58 public static boolean convertToBoolean(Object value)
59 {
60 if (value instanceof Boolean)
61 {
62 return ((Boolean) value);
63 }
64 else if (value instanceof String)
65 {
66 try
67 {
68 return Boolean.parseBoolean((String) value);
69 }
70 catch (Exception e)
71 {
72 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to boolean");
73 }
74 }
75 else
76 {
77 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to boolean");
78 }
79 }
80
81 public static long convertToLong(Object value)
82 {
83 if (value instanceof Number)
84 {
85 return ((Number) value).longValue();
86 }
87 else if (value instanceof String)
88 {
89 try
90 {
91 return Long.parseLong((String) value);
92 }
93 catch (NumberFormatException e)
94 {
95 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to long");
96 }
97 }
98 else
99 {
100 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to long");
101 }
102 }
103
104 public static double convertToDouble(Object value)
105 {
106 if (value instanceof Number)
107 {
108 return ((Number) value).doubleValue();
109 }
110 else if (value instanceof String)
111 {
112 try
113 {
114 return Double.parseDouble((String) value);
115 }
116 catch (NumberFormatException e)
117 {
118 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to double");
119 }
120 }
121 else
122 {
123 throw new IllegalArgumentException("Cannot convert " + value.toString() + " to double");
124 }
125 }
126
127
128 }