arrayoper.java

基于Java的地图数据管理软件。使用MySQL数据库管理系统。

package net.aetherial.gis.publicuse;

import java.util.Hashtable;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2004</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class ArrayOper {
  public ArrayOper() {
  }

  public static Object[] addObject(Object ob,Object[] array){
    if (array == null) {
      array = new Object[1];
      array[0] = ob;
      return array;
    }
    else {
      Object[] temp = new Object[array.length +1];
      for (int i = 0; i < array.length; i++) {
        temp[i] = array[i];
      }
      temp[array.length] = ob;
      return temp;
    }
  }

  public static Object[] removeObject(Object ob,Object[] array){
    if (array == null) {
      return null;
    }else{
      Object[] temp = null;
      for (int i = 0; i < array.length; i++) {
        if (ob != array[i]) {
          temp = addObject(array[i],temp);
        }
      }
      return temp;
    }
  }

  public static String printObjectArray(Object[] array){
    String n = "";
    if (array == null) {
      n = "array == null";
    }else{
      n = n + "Array.length:" + array.length +"\r\n";
      for (int i = 0; i < array.length; i++) {
        n = n + array[i].toString() +"\r\n";
      }
    }
    return n;
  }
  private static String[] getArray(Object[] array){
    if (array == null) {
      return null;
    }
    String[] temp = new String[array.length];
    for (int i = 0; i < array.length; i++) {
      temp[i] = (String)array[i];
    }
    return temp;
  }

  public static void main(String args[]){
    String[] t1 = {"1","2"};
    t1 = getArray(ArrayOper.addObject("4",t1));
    System.out.println("********************");
    System.out.println(ArrayOper.printObjectArray(t1));

    t1 = getArray(ArrayOper.removeObject("1",t1));
    System.out.println("********************");
    System.out.println(ArrayOper.printObjectArray(t1));
    t1 = getArray(ArrayOper.removeObject("2",t1));
    System.out.println("********************");
    System.out.println(ArrayOper.printObjectArray(t1));
  }
}