系統(tǒng)有問題，我在虛擬機(jī)運(yùn)行出準(zhǔn)確的答案，然，不能提交答案 System.out.println("a等于b：" + (a ?== b)); System.out.println("a大于b：" + (a ?> b)); System.out.println("a小于等于b：" + (a <= ?b)); System.out.println("str1等于str2：" + (str1 == ?str2)); } }