java·´Éä
package reflect;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class Test {
public static void main(String[] args) {
try {
Class c = Class.forName("reflect.Student");// ¸ù¾ÝÀàµÄÍêÕûÀàÃû´´½¨ÀàÏó
Object obj = (Student) c.newInstance();// ʵÀý»¯Àà,Ç¿ÖÁÀàÐÍת»»
System.out.println(obj);
Method met = c.getMethod("sayHi", new Class[] { String.class });// µÃµ½Ãû×ÖΪsayHiµÄ·½·¨
String say = (String) met.invoke(obj, new Object[] { "ss" });//µ÷Ó÷½·¨µÃµ½·µ»ØÖµ
System.out.println(say);
} catch (ClassNotFoundException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (InstantiationException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (SecurityException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO ×Ô¶¯Éú³É catch ¿é
e.printStackTrace();
}
}
}
class Student {
private int age;
private String name;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
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type="javax.sql.DataSource" maxActive="100" maxIdle="30"
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Closing a URLClassLoader
By Michael McMahon
Complex Java programs, such as application servers, sometimes create their own class loaders using the URLClassLoader type. With URLClassLoader, applications can load classes and resources from a search path of URLs. The following URL types are ......
public class javaTest {
public static void test(String ...strings){
for(String str: strings){
System.out.print(str + " ");
}
System.out.println();
}
public static void main(String[] args){
test("a", "b", "c", "ddd");
test( ......
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