java - for循环 排序数组 - 求数组最小值

public class Bubble2 {
    static int minNumber; 

    public static void main(String[] args) {
        
        int[] arr;
        arr = new int[]{20,3,2,5,666,33,1999,22};
        
        minNumber = arr[0];  //随便赋个数组的值。不然它会默认为0
        
        Bubble2 Bu2 = new Bubble2();
        Bu2.getMin(arr);
        
        System.out.println("最小值 ===== "+minNumber);
    }
    
    void getMin(int[] arr){
        for(int i=0;i<arr.length-1;i++){
            if(arr[i]<arr[i+1]){
                if(arr[i]<minNumber){
                    minNumber = arr[i];
                }
            }else{
                if(arr[i+1]<minNumber){
                    minNumber = arr[i+1];
                }
            }
        }
    }
    

}