包装类的equals和==

package sso;

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Long a=(long) 110;
        Long b=(long) 110;
        //自动装箱
        System.out.println(a==b);//true
        Long a1=new Long(120);
        Long b1=new Long(120);
        //比较内存地址
        System.out.println(a1==b1);//false
        long c=110;
        long c1=120;
        System.out.println(a==c);//true
        System.out.println(a1==c1);//true
    }
}