java的运算关系和运算符

import java.util.Scanner;

public class qq {
public static void main(String[] args) {
int a1, a2;
System.out.println(“请输入第一个整数（a1）”);
Scanner scanner = new Scanner(System.in);
a1=scanner.nextInt();
System.out.println(“请输入第二个整数（a2）”);
Scanner scanner1 = new Scanner(System.in);
a2=scanner1.nextInt();
if (a1==a2){
System.out.println(“a1和a2是相当的”);
}
if (a1!=a2){
System.out.println(“a1和a2不相等”);
if(a1>a2){
System.out.println(“a1大于a2”);
}
if(a1<a2){
System.out.println(“a1小于a2”);
}
}
}
}