blocks|key|280893|text|如果你有一个班级Person：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280894|public+class+Person+{

++++private+String+lastName;
++++private+String+firstName;

++++public+String+getLastName()+{
++++++++return+lastName;
++++}

++++public+void+setLastName(String+lastName)+{
++++++++this.lastName+=+lastName;
++++}

++++public+String+getFirstName()+{
++++++++return+firstName;
++++}

++++public+void+setFirstName(String+firstName)+{
++++++++this.firstName+=+firstName;
++++}

}|code-block|syntax|javascript|280895|实际上，您可以创建一个新的Person对象，并使用以下内容初始化其firstName和lastName：|280896|+Person+person+=+new+Person(){{
+++++setFirstName("My+FirstName");
+++++setLastName("MyLastName");
+}}|280897|当使用Java代码而不是XML配置来定义Spring配置时，这是非常常用的。|280898|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If you have a class Person:

<pre><code>public class Person {

 private String lastName;
 private String firstName;

 public String getLastName() {
 return lastName;
 }

 public void setLastName(String lastName) {
 this.lastName = lastName;
 }

 public String getFirstName() {
 return firstName;
 }

 public void setFirstName(String firstName) {
 this.firstName = firstName;
 }

}
</code></pre>

You can actually create a new Person object and initialize its firstName and lastName with the following:

<pre><code> Person person = new Person(){{
 setFirstName("My FirstName");
 setLastName("MyLastName");
 }}
</code></pre>

This is used quite often when defining Spring Configuration using Java code instead of XML configuration.

blocks|key|280802|text|您必须为对象创建一个构造函数方法，该方法接受需要值的字段的参数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|280803|示例：|280804|public+myClass(+int+age,+String+name)
{
+++this.age+=+age;
+++this.name+=+name;
}|code-block|syntax|javascript|280805|然后在类中，你想要这样：|280806|myClass+class+=+new+myClass(24,+"name");|280807|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You have to make a constructor method for the object, which takes in parameters of the fields you want values for.

Example:

<pre><code>public myClass( int age, String name)
{
 this.age = age;
 this.name = name;
}
</code></pre>

Then in the class you want this:

<pre><code>myClass class = new myClass(24, "name");
</code></pre>

blocks|key|497518|text|可以使用关键字new并使用构造函数，但与String不同，这是一种非常特殊的对象。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|497519|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

It is possible with the keyword new and using constructors, but not like the String, that is a very special kind of object.

blocks|key|280840|text|class+MyData{

++++public+MyData(String+name,+int+age)+{
++++++++this.name+=+name;
++++++++this.age+=+age;
++++}
++++public+String+name;
++++public+int+age;
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|280841|然后你可以这样实例化你的类：|unstyled|280842|MyData+myData+=+new+MyData("name",+24);|280843|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>class MyData{

 public MyData(String name, int age) {
 this.name = name;
 this.age = age;
 }
 public String name;
 public int age;
 }
</code></pre>

Then you can instantiate your class this way:

<pre><code>MyData myData = new MyData("name", 24);
</code></pre>

blocks|key|280941|text|++++package+com.company;

public+class+InitializationOfObject+{
++++int+a+;
++++int+b+;

++++InitializationOfObject(){
++++}

++++InitializationOfObject(+int+r+,+int+n){
++++++++this.a+=+r;
++++++++this.b+=+n;
++++++++System.out.println("Object+initialization+by+constructor++");
++++}

++++void+methodInitialization(int+k,+int+m){
++++++++System.out.println("object+initialization+via+method");
++++++++this.a+=+k;
++++++++this.b+=+m;
++++}

++++void+display(){
++++++++System.out.println("k+=+"+%2Ba%2B+"m+=+"%2Bb);
++++}

++++public+static+void+main(String...+arg){
++++++++InitializationOfObject+io+=+new+InitializationOfObject();
++++++++InitializationOfObject+io2+=+new+InitializationOfObject(45,65);
++++++++io.a+=+io2.a;
++++++++io.b+=+io2.b;
++++++++io.display();

++++++++io.methodInitialization(34,56);
++++++++io.display();

++++++++io.a+=+12;
++++++++io.b+=+24;
++++++++System.out.println("object+initialization+via+refrence");
++++++++System.out.println("a+=+"%2Bio.a%2B"+"%2B+"+b+="%2Bio.b);
++++}

}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|280942|//构造函数初始化对象|unstyled|280943|k+=+45m+=+65|280944|通过方法初始化对象|280945|k+=+34m+=+56|280946|通过引用进行对象初始化|280947|a+=+12++b+=24|280948|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|T|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|M|3|N|5|F|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$B|C]]|$1|Q|3|-4|5|F|7|Z|8|@]|9|@]|A|$]]]|R|$]]

<pre><code> package com.company;

public class InitializationOfObject {
 int a ;
 int b ;

 InitializationOfObject(){
 }

 InitializationOfObject( int r , int n){
 this.a = r;
 this.b = n;
 System.out.println("Object initialization by constructor ");
 }

 void methodInitialization(int k, int m){
 System.out.println("object initialization via method");
 this.a = k;
 this.b = m;
 }

 void display(){
 System.out.println("k = " +a+ "m = "+b);
 }

 public static void main(String... arg){
 InitializationOfObject io = new InitializationOfObject();
 InitializationOfObject io2 = new InitializationOfObject(45,65);
 io.a = io2.a;
 io.b = io2.b;
 io.display();

 io.methodInitialization(34,56);
 io.display();

 io.a = 12;
 io.b = 24;
 System.out.println("object initialization via refrence");
 System.out.println("a = "+io.a+" "+ " b ="+io.b);
 }

}
</code></pre>

//Object initializatian by construtor 

<pre><code>k = 45m = 65
</code></pre>

object initializaion via method

<pre><code>k = 34m = 56
</code></pre>

object initialization via reference

<pre><code>a = 12 b =24
</code></pre>

blocks|key|281053|text|下面的代码实现了您想要的功能，但并不是您所期望的方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|281054|因此，在调用MyData的类中，您将使用|281055|Public+MyData+x+=+new+MyData();
@PostConstruct+public+void+init()+{
+++++x.setName("Fering");
+++++x.setAge(18);
}|code-block|syntax|javascript|281056|因此，一旦对象被构造，这些命令就会运行，这允许您在任何其他操作运行之前填充对象。|281057|因此，您不必使用匿名子类或创建新的构造函数，您只需获取类，然后在任何其他函数之前使用它的函数。|281058|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

The following does what you want, but not in the way that you would expect.
So in a class calling MyData, you would use
<pre class="lang-java prettyprint-override"><code>Public MyData x = new MyData();
@PostConstruct public void init() {
 x.setName(&quot;Fering&quot;);
 x.setAge(18);
}
</code></pre>
So once the object is construsted, these commands are run, which allows you to populate the object before anything else runs.
So with this you do not have to use anonymous subclasses, or create new constructors, you can just take the class and then use its functions, before anything else would.

Is that possible to initialize object directly as we can do with String class in java:

such as: 

<pre><code>String str="something...";
</code></pre>

I want to do same for my custom class: 

<pre><code>class MyData{
public String name;
public int age;
}
</code></pre>

is that possible like 

<pre><code>MyClass obj1={"name",24};
</code></pre>

or 

<pre><code>MyClass obj1="name",24;
</code></pre>

to initialize object?
or how it can be possible!

initialize object directly in java

Java

是否可以像我们在java中使用String类那样直接初始化对象：例如：String str="something...";我想对我的自定义类做同样的事情：class MyData{public String name;public int age;}有没有可能像这样MyClass obj1={"name",24};或MyClass obj1="name",24;初始化对象？也不知道它是如何实现的！

问在java中直接初始化对象
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