java拆箱装箱中的一个问题

Integer i1 = 129;
Integer i2 = 129;
System.out.println(i1 == i2);
Integer i3 = 1;
Integer i4 = 1;
System.out.println(i3 == i4);
Integer i5 = new Integer(1);
Integer i6 = new Integer(1);
System.out.println(i5 == i6);
System.out.println(i5.equals(i6));
int i7 = 130;
Integer i8 = new Integer(130);
System.out.println(i7 == i8);

运行结果：

false
true
false
true
true