大家帮我看下这段程序有什么地方错了(简单)

大家帮我看下这段程序有什么地方错了(简单)

import java.util,*;
public class E4
{public static void main(String args[])
{int a[]={23,67,89,90,-987};
double b[]={12.89,90.87,34,678.987,-98.78,0.89};
Array.sort(a);
Arrays.sort(b,1,4);
For(int i=0;i<=4;i++)
{System.out.print(a[i]+",");
}
For(int i=0;i<b.length;i++)
{System.out.print(b[i]+",");
}
}
}

问题补充：急用,在线等

import java.util.*;
public class E4
{public static void main(String args[])
{int a[]={23,67,89,90,-987};
double b[]={12.89,90.87,34,678.987,-98.78,0.89};
Arrays.sort(a);
Arrays.sort(b,1,4);

for(int i=0;i<=4;i++)
System.out.print(a[i]+",");

for(int i=0;i<b.length;i++)
System.out.print(b[i]+",");
}
}

谢啦,这下考试及格了