求大神帮我看看这段代码，打印完“12345”结束for循环后为什么还能继续运行？新手没金币，抱歉！

public class Test {

public static void main(String[] args) {
    prints(0, 0, 0, 0, 0);
}

public static void prints(int k1,int k2,int k3,int k4,int k5){

    if(k5!=0){      
        System.out.println(k1*10000+k2*1000+k3*100+k4*10+k5);
    }

    for(int i=1;i<=5;i++){

        if(k1==0) prints(i,k2,k3,k4,k5);

        else if(k2==0){ 
            if(i==k1) continue;
            else prints(k1,i,k3,k4,k5);
        }

        else if(k3==0){     
            if(i==k2||i==k1) continue;
            else prints(k1,k2,i,k4,k5);
        }

        else if(k4==0){
            if(i==k3||i==k2||i==k1) continue;
            else prints(k1,k2,k3,i,k5);
        }

        else if(k5==0){
            if(i==k4||i==k3||i==k2||i==k1) continue;
            else prints(k1,k2,k3,k4,i);
        }   
    }
}

}