JAVA 添加数据后读不出来

public class SuperArray {
    //数组存放
   private int[] elments;
    //使用构造器
    public  SuperArray(){
        //elments=new int[10];
        this(10);
    }
    //维护当前存储的位置
   private int currentIndex=-1;
    public  SuperArray (int capacity){
        elments=new int [capacity];
    }
    //实现数据的增删改查

    //增加数据
    public  void add (int data){
        //游标++
        currentIndex++;
        //扩容
        if(currentIndex>elments.length-1){
            int[]temp=new int[elments.length*2];
            for (int i = 0; i < elments.length ; i++) {
                temp[i]=elments[i];

            }
            elments=temp;
        }

    }
    //删除
    public  void delete (int index){
        for (int i =index ; i <elments.length ; i++) {
            elments[i-1]=elments[i];
        }
      currentIndex--;
    }
    //改
    public  void set (int index,int data){
    elments[index]=data;

    }
    //查
    public  int  select (int index){
    return elments[index];
    }
    //获取长度
    public  int set(){
        return elments.length;
    }
}
public class Text {
    public static void main(String[] args) {
        SuperArray superArray=new SuperArray();
        superArray.add(12);
        superArray.add(120);
        superArray.add(123);
        superArray.delete(2);
        for (int i = 0; i < superArray.set() ; i++) {
            System.out.println(superArray.select(i));
        }

    }

}

"C:\Program Files\jdk-11.0.4\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2021.2\lib\idea_rt.jar=59047:C:\Program Files\JetBrains\IntelliJ IDEA 2021.2\bin" -Dfile.encoding=UTF-8 -classpath C:\Users\HY\IdeaProjects\out\production\encapsulation com.ydlclass.entity.homework.Text
0
0
0
0
0
0
0
0
0
0

Process finished with exit code 0

add赋值逻辑不对