RTTI Reflection总结
package com.cxz.thinking.act10;import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Random;
class method{
public int sum (Integer a, Integer b){
return a b;
}
public int minus(Integer a, Integer b){
return a - b;
}
public int plusplus(Integer a){
return a;
}
public double show(Double dbl){
return dbl 100;
}
}
package com.cxz.thinking.act10;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Random;
class method{
public int sum (Integer a, Integer b){
return a b;
}
public int minus(Integer a, Integer b){
return a - b;
}
public int plusplus(Integer a){
return a;
}
public double show(Double dbl){
return dbl 100;
}
}
package com.cxz.thinking.act10;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Random;
class method{
public int sum (Integer a, Integer b){
return a b;
}
public int minus(Integer a, Integer b){
return a - b;
}
public int plusplus(Integer a){
return a;
}
public double show(Double dbl){
return dbl 100;
}
}
Java代码
public class DynamicInvoke {
public static void main(String[] args) throws ClassNotFoundException,
IllegalAccessException, InstantiationException, InvocationTargetException,
IllegalArgumentException {
Class myCls = Class.forName("com.cxz.thinking.act10.method");//动态加载
Object obj = myCls.newInstance();//创建一个method对象Method.invoke()的第一个参数需要
Method[] methods = myCls.getDeclaredMethods();//得到全体方法数组
for( int i = 0; i < methods.length; i){
Class[] paramType = methods.getParameterTypes();//get the type of each param
Object[] paramValue = new Object;//set the values在下文写如数据
Random rand = new Random();
for(int j = 0; j < paramType.length; j){
if(paramType == Integer.class){//本程序的参数仅仅限与Integer,和Double类
paramValue = rand.nextInt();//动态生成10以下
} else if(paramType == Double.class){
paramValue = rand.nextDouble();//动态生成控制在10以下
}
}
String params = "";
for(int k = 0; k < paramType.length; k){
params= paramValue.toString() ",";
}
params = params.substring(0, params.length() - 1);
params = "[ " params " ]";
System.out.println("{" methods.toString() "}" paramsmethods.invoke(obj, paramValue));//开始调用invoke调用
}
}
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