ccobbra, объект создастся в памяти, однако доступ к нему вы не получите. gc его потом зохавает. такую запись мне порою приходится использовать в java:
Кликните здесь для просмотра всего текста
| Java |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
| import javax.swing.*;
import java.awt.*;
public class Main extends JFrame {
Main() {
JLabel lbl = new JLabel("Hello, world");
setLayout(new FlowLayout());
setTitle("Hello world app");
setSize(200, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
add(lbl);
setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Main();
}
});
}
} |
|
или вот, добавляем в массив объекты:
| C# |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
| namespace Test
{
class Customer
{
public string Name { get; set; }
public string Surname { get; set; }
public string Phone { get; set; }
public int Balance { get; set; }
}
class Program
{
public static void Main(string[] args)
{
var l = new List<Customer>
{
new Customer {
Name = "Anton",
Surname = "Antonov",
Phone = "+ (888) 222333444",
Balance = 100
},
new Customer {
Name = "Andrey",
Surname = "Andreyev",
Phone = "+ (999) 333444555",
Balance = 5000
}
};
l.ForEach((a) => {
Console.WriteLine(a.Name);
});
Console.ReadKey();
}
}
} |
|
если в классе не определен конструктор, вызовется конструктор по-умолчанию, он же .ctor. по сути это конструктор типа object.
Добавлено через 14 минут
и во что оно скомпилится:
Кликните здесь для просмотра всего текста
| C# |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
| .namespace Test // DATA XREF: get_Name+1r set_Name+2w
{
.class private auto ansi beforefieldinit Customer extends [mscorlib]System.Object
{
.field private string <Name>k__BackingField
.field private string <Surname>k__BackingField // DATA XREF: get_Surname+1r
// set_Surname+2w
.field private string <Phone>k__BackingField // DATA XREF: get_Phone+1r
// set_Phone+2w
.field private int32 <Balance>k__BackingField // DATA XREF: get_Balance+1r
// set_Balance+2w
.property instance string Name
{
.get instance string get_Name()
.set instance void set_Name(string value)
}
.property instance string Surname
{
.get instance string get_Surname()
.set instance void set_Surname(string value)
}
.property instance string Phone
{
.get instance string get_Phone()
.set instance void set_Phone(string value)
}
.property instance int32 Balance
{
.get instance int32 get_Balance()
.set instance void set_Balance(int32 value)
}
.method public hidebysig specialname instance string get_Name() // CODE XREF: <Main>b__3+2p
{
.maxstack 1
.locals init (string V0)
ldarg.0
ldfld string Test.Customer::<Name>k__BackingField
stloc.0
br.s loc_19
loc_19:
ldloc.0
ret
}
.method public hidebysig specialname instance void set_Name(string value)
// CODE XREF: Main+14p Main+4Fp
{
.maxstack 8
ldarg.0
ldarg.1
stfld string Test.Customer::<Name>k__BackingField
ret
}
.method public hidebysig specialname instance string get_Surname()
{
.maxstack 1
.locals init (string V0)
ldarg.0
ldfld string Test.Customer::<Surname>k__BackingField
stloc.0
br.s loc_39
loc_39:
ldloc.0
ret
}
.method public hidebysig specialname instance void set_Surname(string value)
// CODE XREF: Main+20p Main+5Bp
{
.maxstack 8
ldarg.0
ldarg.1
stfld string Test.Customer::<Surname>k__BackingField
ret
}
.method public hidebysig specialname instance string get_Phone()
{
.maxstack 1
.locals init (string V0)
ldarg.0
ldfld string Test.Customer::<Phone>k__BackingField
stloc.0
br.s loc_59
loc_59:
ldloc.0
ret
}
.method public hidebysig specialname instance void set_Phone(string value)
// CODE XREF: Main+2Cp Main+67p
{
.maxstack 8
ldarg.0
ldarg.1
stfld string Test.Customer::<Phone>k__BackingField
ret
}
.method public hidebysig specialname instance int32 get_Balance()
{
.maxstack 1
.locals init (int32 V0)
ldarg.0
ldfld int32 Test.Customer::<Balance>k__BackingField
stloc.0
br.s loc_79
loc_79:
ldloc.0
ret
}
.method public hidebysig specialname instance void set_Balance(int32 value)
// CODE XREF: Main+35p Main+73p
{
.maxstack 8
ldarg.0
ldarg.1
stfld int32 Test.Customer::<Balance>k__BackingField
ret
}
.method public hidebysig specialname rtspecialname instance void .ctor()
// CODE XREF: Main+8p Main+43p
{
.maxstack 8
ldarg.0
call instance void [mscorlib]System.Object::.ctor()
ret
}
}
}
.namespace Test // DATA XREF: Main+83r Main+96w ...
{
.class private auto ansi beforefieldinit Program extends [mscorlib]System.Object
{
.field private static genericinst(class [mscorlib]System.Action`1,18) CS$<>9__CachedAnonymousMethodDelegate4
.method public static hidebysig void Main(string[] args)
{
.entrypoint
.maxstack 4
.locals init (genericinst(class [mscorlib]System.Collections.Generic.List`1,18) V0,
int32 V1,
genericinst(class [mscorlib]System.Collections.Generic.List`1,18) V2,
int32 V3)
nop
newobj T0xA000012
stloc.1
ldloc.1
newobj instance void Test.Customer::.ctor()
stloc.2
ldloc.2
ldstr "Anton"
callvirt instance void Test.Customer::set_Name(string value)
nop
ldloc.2
ldstr "Antonov"
callvirt instance void Test.Customer::set_Surname(string value)
nop
ldloc.2
ldstr "+ (888) 222333444"
callvirt instance void Test.Customer::set_Phone(string value)
nop
ldloc.2
ldc.i4.s 0x64
callvirt instance void Test.Customer::set_Balance(int32 value)
nop
ldloc.2
callvirt T0xA000013
nop
ldloc.1
newobj instance void Test.Customer::.ctor()
stloc.3
ldloc.3
ldstr "Andrey"
callvirt instance void Test.Customer::set_Name(string value)
nop
ldloc.3
ldstr "Andreyev"
callvirt instance void Test.Customer::set_Surname(string value)
nop
ldloc.3
ldstr "+ (999) 333444555"
callvirt instance void Test.Customer::set_Phone(string value)
nop
ldloc.3
ldc.i4 0x1388
callvirt instance void Test.Customer::set_Balance(int32 value)
nop
ldloc.3
callvirt T0xA000013
nop
ldloc.1
stloc.0
ldloc.0
ldsfld genericinst(class [mscorlib]System.Action`1,18) Test.Program::CS$<>9__CachedAnonymousMethodDelegate4
brtrue.s loc_14D
ldnull
ldftn void Test.Program::<Main>b__3(class Test.Customer a)
newobj T0xA000014
stsfld genericinst(class [mscorlib]System.Action`1,18) Test.Program::CS$<>9__CachedAnonymousMethodDelegate4
br.s loc_14D
loc_14D: // CODE XREF: Main+88j
ldsfld genericinst(class [mscorlib]System.Action`1,18) Test.Program::CS$<>9__CachedAnonymousMethodDelegate4
callvirt T0xA000015
nop
call valuetype [mscorlib]System.ConsoleKeyInfo [mscorlib]System.Console::ReadKey()
pop
ret
}
.method public hidebysig specialname rtspecialname instance void .ctor()
{
.maxstack 8
ldarg.0
call instance void [mscorlib]System.Object::.ctor()
ret
}
.method private static hidebysig void <Main>b__3(class Test.Customer a)
// DATA XREF: Main+8Br
{
.maxstack 8
nop
ldarg.0
callvirt instance string Test.Customer::get_Name()
call void [mscorlib]System.Console::WriteLine(string)
nop
ret
}
}
} |
|
(
