• 2022-05-26
    下列程序段的运行结果是() String str1 = “Good”; String str2 = “morning”; String str3 = str1.toLowerCase()+str2.toUpperCase(); System.out.println(str3);
    A: Goodmorning

    B: gOODmORNING

    C: goodmorning

    D: goodMORNING