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10 package examples;
11
12 import java.util.List  ;
13 import java.util.Vector ;
14 import java.util.Map ;
15 import java.util.HashMap ;
16
17 public class ReturnTypeExample {
18
19 public static int returnInteger() {
20 return 1;
21 }
22
23 public static Integer returnIntegerObject() {
24 return new Integer (2);
25 }
26
27 public static short returnShort() {
28 return 3;
29 }
30
31 public static Short returnShortObject() {
32 return new Short ((short)4);
33 }
34
35 public static long returnLong() {
36 return 5;
37 }
38
39 public static Long returnLongObject() {
40 return new Long (6);
41 }
42
43 public static float returnFloat() {
44 return 7;
45 }
46
47 public static Float returnFloatObject() {
48 return new Float (8);
49 }
50
51 public static double returnDouble() {
52 return 3.14159;
53 }
54
55 public static Double returnDoubleObject() {
56 return new Double (3.14159);
57 }
58
59 public static byte returnByte() {
60 return (byte)11;
61 }
62
63 public static Byte returnByteObject() {
64 return new Byte ((byte)12);
65 }
66
67 public static boolean returnBoolean() {
68 return true;
69 }
70
71 public static Boolean returnBooleanObject() {
72 return new Boolean (false);
73 }
74
75 public static char returnCharacter() {
76 return 'a';
77 }
78
79 public static Character returnCharacterObject() {
80 return new Character ('b');
81 }
82
83 public static String returnString() {
84 return "returing a string";
85 }
86
87 public static Coordinate returnCoordinateObject() {
88 return new Coordinate(4,2);
89 }
90
91 public static int[] returnIntegerArray() {
92 int[] intarr = { 1, 2, 3, 4, 5 };
93 return intarr;
94 }
95
96 public static String [] returnStringArray() {
97 String [] strarr = { "one", "two", "three", "four", "five" };
98 return strarr;
99 }
100
101 public static Coordinate[] returnCoordinateObjectArray() {
102 Coordinate[] coarr = { new Coordinate(1,1),
103 new Coordinate(2,2),
104 new Coordinate(3,3),
105 new Coordinate(4,4),
106 new Coordinate(5,5) };
107 return coarr;
108 }
109
110 public static List returnIntegerList() {
111 List list = new Vector ();
112 list.add(new Integer (1));
113 list.add(new Integer (2));
114 list.add(new Integer (3));
115 list.add(new Integer (4));
116 list.add(new Integer (5));
117 return list;
118 }
119
120 public static Map returnIntegerMap() {
121 Map map = new HashMap ();
122 map.put("one", new Integer (1));
123 map.put("two", new Integer (2));
124 map.put("three", new Integer (3));
125 map.put("four", new Integer (4));
126 map.put("five", new Integer (5));
127 return map;
128 }
129
130 public static List returnCoordinateObjectList() {
131 List list = new Vector ();
132 list.add(new Coordinate(1,1));
133 list.add(new Coordinate(2,2));
134 list.add(new Coordinate(3,3));
135 list.add(new Coordinate(4,4));
136 list.add(new Coordinate(5,5));
137 return list;
138 }
139
140 public static Map returnCoordinateObjectMap() {
141 Map map = new HashMap ();
142 map.put("one", new Coordinate(1,1));
143 map.put("two", new Coordinate(2,3));
144 map.put("three", new Coordinate(5,8));
145 map.put("four", new Coordinate(13,21));
146 map.put("five", new Coordinate(34,55));
147 return map;
148 }
149
150 static public class Coordinate {
151 public int x;
152 public int y;
153
154 public Coordinate(int x, int y) {
155 this.x = x;
156 this.y = y;
157 }
158
159 public String toString() {
160 return "x: " + this.x + ", y: " + this.y;
161 }
162 }
163
164 }
165 |
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