小编Max*_*its的帖子

反正有没有在运行时覆盖一个方法？即使它需要从该实例动态创建子类？

是否可以反射地覆盖给定类的实例的方法？

前提条件:游戏具有覆盖能力的方法act().

public class Foo {

  public Method[] getMethods() {
    Class s = Game.class;
    return s.getMethods();
  }

  public void override()
  {
    Method[] arr = getMethods()
    for (int i = 0; i<arr.length; i++)
    {
      if (arr[i].toGenericString().contains("act()")
      {
        // code to override method (it can just disable to method for all i care)
      }
    }  
  }                  
}

   private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  int count = jSlider1.getValue(); 
  int delay = jSlider2.getValue();
    int valueOfSlider = jSlider2.getValue();
     int valueOfSlider2 = jSlider1.getValue();

while (count > 0) 
{ 
    count--;
    String count2 = ""+count; 
  jLabel3.setText(count2);
try {Thread.sleep(delay); }
catch (InterruptedException ie) { }

 }

它最终将显示jLabel上的最终数字,但它不会逐步更新数字.任何帮助

package puzzle;

import java.awt.Color;
import javax.swing.*;
import java.util.*;


public class Puzzle {

Integer x = 50;
Integer y = 50;
int x2 = 100;
int y2 = 100;
int vnotx = 0;
int vnoty = 0;
float t = 0;
float t2  = 0; 
JFrame frame = new JFrame();
Move m = new Move(x, y,Color.GREEN);
Move n = new Move(x,y,Color.ORANGE);
java.util.Timer timer = new java.util.Timer();
java.util.Timer timer2 = new java.util.Timer();

public Puzzle() {

    frame.setUndecorated(true);
    frame.setSize(400, 400);
    frame.add(m);
    frame.add(n);
    frame.addKeyListener(new java.awt.event.KeyAdapter() …

我有一个自定义类MDRect,我正在尝试添加NSMutableArray

数组是属性:

@property (retain) NSMutableArray* array; 

它在NSView子类的initMethod中初始化:

-(id)init {
array =  [NSMutableArray new];
return [super init];
 }

然后我试图在这里添加一个对象:

-(void)mouseUp:(NSEvent *)theEvent
{
NSPoint mouseLoc = [NSEvent mouseLocation];    
mouseLoc = [self mouse:mouseLoc inRect:[self frame]];

CGSize temp;
NSLog(@"%f",mouseLoc.y - mouseLocation.y);
NSLog(@"%f",mouseLoc.x - mouseLocation.x);
temp.height = mouseLoc.y - mouseLocation.y;
temp.width = mouseLoc.x - mouseLocation.x;

tempRect.size = temp;
MDRect * rect = [[MDRect alloc] initWithColor:[NSColor orangeColor] andRect:tempRect];
[array addObject:rect];    




int i =     (int)array.count;
NSLog(@"%i",i);
[self setNeedsDisplay:YES];
}

但是没有将对象添加到数组中.它永远不会返回NSLog函数中除0以外的任何值.我究竟做错了什么？