题解 | #判断学生成绩等级#
判断学生成绩等级
http://www.nowcoder.com/practice/caef110bb06149119672a4dd2bc5d4ad
string1==string2,是值相等,而且内存地址也相等,是完全的相等
string1.equals(string2)为true,只是值相同
String level;
if(grade.equals("A"))
level = "优秀";
else if(grade.equals("B"))
level = "良好";
else if(grade.equals("C"))
level = "及格";
else if(grade.equals("D"))
level = "不及格";
else
level = "未知等级";
System.out.println(level);
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