![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
运行类D和类E的main函数后输出的结果是: class D{ publuc static void main(String args[]){ String s1 = new String("hello"); String s2 = new String("hello"); if(s1.equals(s2)) System.out.println("equal"); else System.out.println("not equal"); } } class E{ publuc static void main(String args[]){ StringBuffer s1 = new StringBuffer("hello"); StringBuffer s2 = new StringBuffer("hello"); if(s1.equals(s2)) System.out.println("equal"); else System.out.println("not equal"); } }