Java 中包装类wrapped type之间以及和primitive type的比较

public static void main(String[] args) {
// TODO Auto-generated method stub
Integer a = new Integer(1);
Integer b = new Integer(1);
int c=1;
Integer e = 1;
System.out.println("a==b:"+(a==b));
System.out.println("a==c:"+(a==c));
System.out.println("a==e:"+(a==e));
System.out.println("c==e:"+(c==e));
}