嵌套和级连的判断

package hello;

import java.util.Scanner;

public class hello {

public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int a;
int b;
int c;
int z;
a = in.nextInt();
b = in.nextInt();
c = in.nextInt();
if(a>b){
if(a>c){
z = a;
}
else{
z = c;
}
}
else{
if(b>c){
z = b;
}
else{
z = c;
}
}
System.out.println(z);

}

}

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规则。