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Constructor[]  constructor = Class.forName(“java.lang.String”).getConstructor();
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Constructor  constructor =
Class.forName(“java.lang.String”).getConstructor(StringBuffer.class);
´´½¨ÊµÀý¶ÔÏó£ºString str2 = (String)constructor1.newInstance(new StringBuffer("abc"));
1.2.4.FieldÀࣺ
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public void setAccessible(boolean flag)
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public void set(Object obj,Object value)
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public Object get(Object obj)
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public class ReflectPoint {
    private int x;
    public int y;
    public ReflectPoint(int x, int y) {
       this.x = x;
       this.y = y;
    }
public int getX() {
       return x;
    }
    public void setX(int x) {
       this.x = x;
    }
    public int getY() {
       return y;
    }
    public void setY(int y) {
       this.y = y;
    }
}
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       ReflectPoint pt1 = new ReflectPoint(3,5);
       Field fieldY = pt1.getClass().getField("y");
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package chen;
import java.util.Date;
public class Sort {
 /**
  * ðÅÝÅÅÐò
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  * @author chenpengye
  */
 public void sort(int[] list){
  long begain=new Date().getTime();
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