java编一个成绩查询 java成绩管理系统

java编一个成绩查询

int score = 80
if(score>90 && score <100){
System.out.println("优秀")
}else if(score>60 && score <90){
System.out.println("及格")
}else if(score<60){
System.out.println("不及格")
}else{
System.out.println("错误数据")
}

java成绩管理系统

public boolean add(SysBean sysbean){
boolean model=true
init()
sql="insert into info(name,spending,epecificSpending,income,"
"epecificIncome,journal,date) values(?,?,?,?,?,?,?)"
pstmt=DataBaseConnection.getpStmt(conn, sql)
try {
pstmt.setString(1, sysbean.getName())
pstmt.setFloat(2, sysbean.getSpending())
pstmt.setString(3, sysbean.getEpecificSpending())
pstmt.setFloat(4, sysbean.getIncome())
pstmt.setString(5, sysbean.getEpecificIncome())
pstmt.setString(6, sysbean.getJournal())
pstmt.setDate(7, new java.sql.Date(new java.util.Date().getTime()))
pstmt.executeUpdate()
} catch (SQLException e) {
e.printStackTrace()
model=false
}
close()
return model
}

java成绩等级查询

import java.io.BufferedReader
import java.io.IOException
import java.io.InputStreamReader

public class GradeManager {

/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
BufferedReader stdIn = new BufferedReader(new InputStreamReader(
System.in))
String inputStr = null
double inputGrade = 0d
do {
System.out.println("请输入成绩(0-100)，输入y退出程序")
// 读入输入的成绩
inputStr = stdIn.readLine().trim()
if (inputStr.matches("\d .\d ")) {
// 判断输入是否为数字
inputGrade = Double.parseDouble(inputStr)
if (inputGrade >= 0 && inputGrade <= 100) {
System.out.println(inputStr " "
show((int) inputGrade))
}else{
System.out.println("请输入正确的成绩，正确的成绩在0-100之间的任意数字")
}
} else {
if (!inputStr.equalsIgnoreCase("Y")) {
// 输入不合法重新输入
System.out.println("请重新输入正确的成绩")
} else {
// 输入完毕
System.out.println("欢迎下次使用")
}
}

} while (inputStr != null && !inputStr.equalsIgnoreCase("Y"))
}

/**
*
* @param grade
* @return
*/
public static String show(int grade) {
String gradeLevel = "F"
switch (grade / 10) {
case 9:
gradeLevel = "A"
break
case 8:
gradeLevel = "B"
break
case 7:
gradeLevel = "C"
break
case 6:
gradeLevel = "D"
break
default:
gradeLevel = "F"
break
}
return gradeLevel
}
}