operatevector.java~2~

some example source of java,for beginner.inside there are a lot of sample examples

package example4;

import java.util.*;

public class OperateVector {
  public static void main(String[] args) {
    OperateVector ov=new OperateVector();
    Enumeration vEnum=ov.buildVector().elements();
    while(vEnum.hasMoreElements()){
      System.out.print(vEnum.nextElement()+" ");
    }
  }

  public Vector buildVector() { //建立多维的矢量对象
    Vector vTemps = new Vector();
    for (int i = 0; i < 4; i++) {
      Vector vTemp = new Vector();
      for (int j = 0; j < 4; j++) {
        vTemp.addElement(new Integer(i*j));
      }
      vTemps.addElement(vTemp);
    }
    return vTemps;
  }

  public Vector delete(Vector vTemp, int iTemp) {//删除一个元素
    if (iTemp > vTemp.size()) {
      System.out.println("数据越界！");
      return null;
    }
    else {
      vTemp.removeElementAt(iTemp);
    }
    return vTemp;
  }
  public Vector updata(Vector vTemp,int iTemp,Object oTemp){//更新矢量对象
    if (iTemp>vTemp.size()){
      System.out.println("数据越界！");
      return null;
    }
    else {
      vTemp.setElementAt(oTemp,iTemp);
    }
    return vTemp;
  }
}