import java.util.Scanner;
public class qian{
   
    public static void main(String[] args){
        Scanner s = new Scanner(System.in);
        System.out.println("输入A数组：");
        int[] A = new int[10];
        int[] B = new int[10];

        for(int i=0; i<A.length; i++){
            A[i] = s.nextInt();
        }

        System.out.println("输入B数组：");
        
        for(int i=0; i<B.length; i++){
            B[i] = s.nextInt();
        }
        
        System.out.println(equal(A,B));
    }

    public static boolean equal(int[] list1,int[] list2){
        return java.util.Arrays.equals(list1,list2);


    }
        
   
}

你这个equal方法写的实在不好，建议重写一个。拜托下次提问给点分吧。。
import java.util.Scanner;
public class qian{
   
    public static void main(String[] args){
        Scanner s = new Scanner(System.in);
        System.out.println("输入A数组长度");
        int n = s.nextInt();
        int[] A = new int[n];
        System.out.println("输入A数组：");
        for(int i=0; i<A.length; i++){
            System.out.println("输入第" + (i+1) + "个元素，数组总长度为"+n);
            A[i] = s.nextInt();
        }
        System.out.println("输入B数组长度");
        n = s.nextInt();
   
        int[] B = new int[n];
        System.out.println("输入B数组：");
        
        for(int i=0; i<B.length; i++){
            System.out.println("输入第" + (i+1) + "个元素，数组总长度为"+n);
            B[i] = s.nextInt();
        }
        s.close();
        System.out.print("A数组为：");
        for(int i : A){
            System.out.print(i + " ");
        }
        System.out.println();
        System.out.print("B数组为：");
        for(int i : B){
            System.out.print(i + " ");
        }
        System.out.println();
        System.out.println(equal(A,B));
    }
    public static boolean equal(int[] list1,int[] list2){
        return java.util.Arrays.equals(list1,list2);
    }      
}

你的代码已经有人解决了！
给你点建议吧：创建的类名要大写！

a[0],