java 谁能帮我改正一下 谢谢

//改好了

import java.util.Arrays;

public class exam
{
public static void main(String args[])
{
int a []=new int[10];
int b []=new int[10];
Arrays.fill(a,7);
System.out.print("a数组的值:");
for (int i=0;i<a.length;i++)
System.out.print(a[i]+ "");
System.arraycopy(a,0,b,0,a.length);
System.out.print("\nb数组的值:");
for (int i=0;i<b.length;i++)
System.out.print(b[i]+"");
Boolean istrue=Arrays.equals(a,b);
if (istrue==true)
System.out.println("\n两个数组完全相等!");
else
System.out.println("\n两个数组不相等!");
}
}

import java.util.*;
class exam {
public static void main(String args[]){
int a []=new int[10];
int b []=new int[10];
Arrays.fill(a,7);
System.out.print("a数组的值:");
for (int i=0;i<