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Class.newInstance()
Constructor.newInstance()
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Class A£¨±»µ÷ÓõÄʾÀý£©£º
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public class A {
private A(){
System.out.println("A's constructor is called.");
}
private A(int a,int b){
System.out.println("a:"+a+" b:"+b);
}
}
public class A {
private A(){
System.out.println("A's constructor is called.");
}
private A(int a,int b){
System.out.println("a:"+a+" b:"+b);
}
}


Class B£¨µ÷ÓÃÕߣ©£º
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import java.lang.reflect.Constructor;

import static java.lang.System.out;

public class B {

public static void main(String[] args) {

B b=new B();

out.println("ͨ¹ýClass.NewInstance()µ÷ÓÃ˽Óй¹Ô캯Êý:");

b.newInstanceByClassNewInstance();

out.println("ͨ¹ýConstructor.newInstance()µ÷ÓÃ˽Óй¹Ô캯Êý:");

b.newInstanceByConstructorNewInstance();

}

/*ͨ¹ýClass.NewInstance()´´½¨ÐµÄÀàʾÀý*/

private void newInstanceByClassNewInstance(){

try {

/*µ±Ç°°üÃûΪreflect£¬±ØÐëʹÓÃȫ·¾¶*/

A a=(A)Class.forName("reflect.A").newInstance();


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