|
| 1 | +���ϵIJ������裺 |
| 2 | +A:�������϶��� |
| 3 | +B:����Ԫ�ض��� |
| 4 | +C:��Ԫ�����ӵ����� |
| 5 | +D:�������� |
| 6 | + |
| 7 | +���ϵı�����ʽ�� |
| 8 | +Collection:������,��ǿfor |
| 9 | +|--List:��ͨfor |
| 10 | +|--Set: |
| 11 | + |
| 12 | +�ַ���(���� hello,world,java) |
| 13 | +�Զ������(ѧ����) |
| 14 | +class Student { |
| 15 | +private String name; |
| 16 | +private int age; |
| 17 | + |
| 18 | +public Student() {} |
| 19 | + |
| 20 | +public Student(String name,int age) { |
| 21 | +this.name = name; |
| 22 | +this.age = age; |
| 23 | +} |
| 24 | + |
| 25 | +public void setName(String name) { |
| 26 | +this.name = name; |
| 27 | +} |
| 28 | + |
| 29 | +public String getName() { |
| 30 | +return name; |
| 31 | +} |
| 32 | + |
| 33 | +public void setAge(int age) { |
| 34 | +this.age = age; |
| 35 | +} |
| 36 | + |
| 37 | +public int getAge() { |
| 38 | +return age; |
| 39 | +} |
| 40 | +} |
| 41 | + |
| 42 | +1��Collection |
| 43 | +A:�ַ��� |
| 44 | +Collection<String> c = new ArrayList<String>(); |
| 45 | + |
| 46 | +c.add("hello"); |
| 47 | +c.add("world"); |
| 48 | +c.add("java"); |
| 49 | + |
| 50 | +Iterator<String> it = c.iterator(); |
| 51 | +while(it.hasNext()) { |
| 52 | +String s = it.next(); |
| 53 | +System.out.println(s); |
| 54 | +} |
| 55 | + |
| 56 | +for(String s : c) { |
| 57 | +System.out.println(s); |
| 58 | +} |
| 59 | + |
| 60 | +B:�Զ������ |
| 61 | +Collection<Student> c = new ArrayList<Student>(); |
| 62 | + |
| 63 | +Student s1 = new Student("������",50); |
| 64 | +Student s2 = new Student("����",40); |
| 65 | +Student s3 = new Student("�⾩",30); |
| 66 | + |
| 67 | +c.add(s1); |
| 68 | +c.add(s2); |
| 69 | +c.add(s3); |
| 70 | + |
| 71 | +Iterator<Student> it = c.iterator(); |
| 72 | +while(it.hasNext()) { |
| 73 | +Student s = it.next(); |
| 74 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 75 | +} |
| 76 | + |
| 77 | +for(Student s : c) { |
| 78 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 79 | +} |
| 80 | + |
| 81 | +2��List |
| 82 | +A:�ַ��� |
| 83 | +List<String> list = new ArrayList<String>(); |
| 84 | + |
| 85 | +list.add("hello"); |
| 86 | +list.add("world"); |
| 87 | +list.add("java"); |
| 88 | + |
| 89 | +Iterator<String> it = list.iterator(); |
| 90 | +while(it.hasNext()) { |
| 91 | +String s = it.next(); |
| 92 | +System.out.println(s); |
| 93 | +} |
| 94 | + |
| 95 | +for(String s : list) { |
| 96 | +System.out.println(s); |
| 97 | +} |
| 98 | + |
| 99 | +for(int x=0; x<list.size(); x++) { |
| 100 | +String s = list.get(x); |
| 101 | +System.out.println(s); |
| 102 | +} |
| 103 | + |
| 104 | +B:�Զ������ |
| 105 | +List<Student> list = new ArrayList<Student>(); |
| 106 | + |
| 107 | +Student s1 = new Student("������",50); |
| 108 | +Student s2 = new Student("����",40); |
| 109 | +Student s3 = new Student("�⾩",30); |
| 110 | + |
| 111 | +list.add(s1); |
| 112 | +list.add(s2); |
| 113 | +list.add(s3); |
| 114 | + |
| 115 | +Iterator<Student> it = list.iterator(); |
| 116 | +while(it.hasNext()) { |
| 117 | +Student s = it.next(); |
| 118 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 119 | +} |
| 120 | + |
| 121 | +for(Student s : list) { |
| 122 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 123 | +} |
| 124 | + |
| 125 | +for(int x=0; x<list.size(); x++) { |
| 126 | +Student s = list.get(x); |
| 127 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 128 | +} |
| 129 | + |
| 130 | +3��ArrayList(���� �Լ�����) |
| 131 | +A:�ַ��� |
| 132 | +ArrayList<String> array = new ArrayList<String>(); |
| 133 | + |
| 134 | +array.add("java"); |
| 135 | +array.add("hello"); |
| 136 | +array.add("world"); |
| 137 | + |
| 138 | +//��ͨforѭ�� |
| 139 | +for(int i =0; i<array.size(); i++) { |
| 140 | +String s = array.get(i); |
| 141 | +System.out.println(s); |
| 142 | +} |
| 143 | + |
| 144 | +//��ǿfor |
| 145 | +for(String s : array) { |
| 146 | +System.out.println(s); |
| 147 | +} |
| 148 | + |
| 149 | +//������ |
| 150 | +Iterator<String> it = array.iterator(); |
| 151 | +while(it.hasNext()) { |
| 152 | +String s = it.next(); |
| 153 | +System.out.println(s); |
| 154 | +} |
| 155 | +B:�Զ������ |
| 156 | +ArrayList<Student> array = new ArrayList<Student>(); |
| 157 | + |
| 158 | +Student s1 = new Student("laozi",1000); |
| 159 | +Student s2 = new Student("kongzi",100); |
| 160 | +Student s3 = new Student("zhuangzi",10); |
| 161 | + |
| 162 | +array.add(s1); |
| 163 | +array.add(s2); |
| 164 | +array.add(s3); |
| 165 | + |
| 166 | +//��ͨforѭ�� |
| 167 | +for (int i = 0; i<array.size(); i++) { |
| 168 | +Student s = array.get(i); |
| 169 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 170 | +} |
| 171 | + |
| 172 | +//��ǿforѭ�� |
| 173 | +for (Student s : array) { |
| 174 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 175 | +} |
| 176 | + |
| 177 | +//������ѭ�� |
| 178 | +for(Iterator<Student> it = array.iterator(); it.hasNext();) { |
| 179 | +Student s = it.next(); |
| 180 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 181 | +} |
| 182 | + |
| 183 | + |
| 184 | +4��Vector(�Լ�����) |
| 185 | +A:�ַ��� |
| 186 | +Vector<String> vector = new Voctor<String>(); |
| 187 | + |
| 188 | +vector.add("java"); |
| 189 | +vector.add("hello"); |
| 190 | +vector.add("world"); |
| 191 | + |
| 192 | +//��ͨforѭ�� |
| 193 | +for(int i =0; i<vector.size(); i++) { |
| 194 | +String s = vector.get(i); |
| 195 | +System.out.println(s); |
| 196 | +} |
| 197 | + |
| 198 | +//��ǿfor |
| 199 | +for(String s : vector) { |
| 200 | +System.out.println(s); |
| 201 | +} |
| 202 | + |
| 203 | +//������ |
| 204 | +Iterator<String> it = vector.iterator(); |
| 205 | +while(it.hasNext()) { |
| 206 | +String s = it.next(); |
| 207 | +System.out.println(s); |
| 208 | +} |
| 209 | +B:�Զ������ |
| 210 | +vectorList<Student> array = new vectorList<Student>(); |
| 211 | + |
| 212 | +Student s1 = new Student("laozi",1000); |
| 213 | +Student s2 = new Student("kongzi",100); |
| 214 | +Student s3 = new Student("zhuangzi",10); |
| 215 | + |
| 216 | +vector.add(s1); |
| 217 | +vector.add(s2); |
| 218 | +vector.add(s3); |
| 219 | + |
| 220 | +//��ͨforѭ�� |
| 221 | +for (int i = 0; i<vector.size(); i++) { |
| 222 | +Student s = vector.get(i); |
| 223 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 224 | +} |
| 225 | + |
| 226 | +//��ǿforѭ�� |
| 227 | +for (Student s : vector) { |
| 228 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 229 | +} |
| 230 | + |
| 231 | +//������ѭ�� |
| 232 | +for(Iterator<Student> it = vector.iterator(); it.hasNext();) { |
| 233 | +Student s = it.next(); |
| 234 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 235 | +} |
| 236 | + |
| 237 | +5��LinkedList(���� �Լ�����) |
| 238 | + |
| 239 | +6��Set |
| 240 | +A:�ַ��� |
| 241 | +Set<String> set = new HashSet<String>(); |
| 242 | + |
| 243 | +set.add("hello"); |
| 244 | +set.add("world"); |
| 245 | +set.add("java"); |
| 246 | + |
| 247 | +Iterator<String> it = set.iterator(); |
| 248 | +while(it.hasNext()) { |
| 249 | +String s = it.next(); |
| 250 | +System.out.println(s); |
| 251 | +} |
| 252 | + |
| 253 | +for(String s : set) { |
| 254 | +System.out.println(s); |
| 255 | +} |
| 256 | + |
| 257 | +B:�Զ������ |
| 258 | +Set<Student> set = new HashSet<Student>(); |
| 259 | + |
| 260 | +Student s1 = new Student("������",50); |
| 261 | +Student s2 = new Student("����",40); |
| 262 | +Student s3 = new Student("�⾩",30); |
| 263 | + |
| 264 | +set.add(s1); |
| 265 | +set.add(s2); |
| 266 | +set.add(s3); |
| 267 | + |
| 268 | +Iterator<Student> it = set.iterator(); |
| 269 | +while(it.hasNext()) { |
| 270 | +Student s = it.next(); |
| 271 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 272 | +} |
| 273 | + |
| 274 | +for(Student s : set) { |
| 275 | +System.out.println(s.getName()+"---"+s.getAge()); |
| 276 | +} |
| 277 | + |
| 278 | +7��HashSet(���� �Լ�����) |
| 279 | +�洢�Զ�������ʱ�������Ա����ֵ��ͬ�����Ǿ���Ϊ��ͬһ��Ԫ�ء� |
| 280 | + |
| 281 | +8��TreeSet(���� �Լ�����) |
| 282 | +�洢�Զ�������ʱ�������Ա����ֵ��ͬ�����Ǿ���Ϊ��ͬһ��Ԫ�ء� |
| 283 | +���ȸ��������С������������ڸ��������ij������� |