testfx.java~32~

梅花雪树的经典制作

package com.test;

public class TestFX {
    private Object[] objs;
    private int index = 0;
    private int defaultCap = 10;

    public TestFX() {
        objs = new Object[defaultCap];
    }

    public static void main(String[] args) {
        TestFX testfx = new TestFX();
    }

    public void add(Object o){
       objs[index] = o;
       index++;
       if(index==defaultCap){
           exCap();
       }
    }

    public void exCap(){
       Object[] newobjs = new Object[defaultCap*2];
       defaultCap = defaultCap*2;
       for (int i = 0; i < objs.length; i++) {
           newobjs[i] = objs[i];
       }
       objs = newobjs;
    }

    public Object get(int myIndex){
        if(myIndex>index-1){
            try {
                throw new Exception("没有相应的元素");
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            return null;
        }else{
            return objs[myIndex];
        }
    }

    public void removeAll(){
       for (int i = 0; i < objs.length; i++) {
           objs[i] = null;
       }
       index = 0;
   }

   public void remove(int k){
      Object[] newobjs = new Object[defaultCap];

      for (int i = 0; i < k; i++) {
          newobjs[i] = objs[i];
      }

      for (int i = k+1; i <objs.length; i++) {
          newobjs[i-1] = objs[i];
      }
      objs = newobjs;
      index--;
   }

   public int getSize(){
      return index;
   }
}