相关截图：

相关代码：

import java.util.Scanner;
public class ScoreDemo{
   public static void main(String[] args){
       //定义一个三行两列的整型二维数组intArray
        int[][] scor = new int[3][2];
       //从键盘输入学生成绩，要求输入顺序与效果图一致
        for(int i=0;i<scor.length;i++){
            for(int j=0;j<scor[i].length;j++){
                if(j==0){
                    System.out.println("input YW scor:");
                    Scanner sc = new Sacnner(System.in);
                    int[i][j] = sc.nextInt();
                }else{
                    System.out.println("input Math scor:");
                    Scanner sc = new Scanner(System.in);
                    int[i][j] = sc.nextInt();
                }
            }bao
        }
       //求语文的总成绩和平均分
       int YWsum=0;
       float YWanu;
        for(int i=0;i<scor.length;i++){
            YWsum += int[i][0];
        }
        YWanu = YWsum/3;
        System.out.println("YWsum="+YWsum);
        System.out.println("YWaun="+YWanu);
       //求数学的总成绩和平均分
        int Mathsum=0;
       float Mathanu;
        for(int i=0;i<scor.length;i++){
            Mathsum += int[i][0];
        }
        Mathanu = Mathsum/3;
        System.out.println("Mathsum="+Mathsum);
        System.out.println("Mathaun="+Mathanu);
   }

相关代码：

                               /data/webroot/135
2/32440/ScoreDemo.java:26: error: illegal start
of expression
                         YWsum += int[i][0];
                       ^
                        /data/webroot/1352/32440
/ScoreDemo.java:26: error: ';' expected
   YWsum += int[i][0];
  ^
   /data/webroot/1352/32440/ScoreDemo.java:26: e
rror: illegal start of expression
                                             YWs
um += int[i][0];
                                             ^
                                              /d
ata/webroot/1352/32440/ScoreDemo.java:35: error:
 ']' expected
                         Mathsum += int[i][0];
                         ^
                          /data/webroot/1352/324
40/ScoreDemo.java:35: error: ';' expected
     Mathsum += int[i][0];
      ^
       /data/webroot/1352/32440/ScoreDemo.java:3
5: error: illegal start of expression
 Mathsum += int[i][0];
   ^
    /data/webroot/1352/32440/ScoreDemo.java:35:
error: ';' expected
                               Mathsum += int[i]
[0];
                                  ^
                                   /data/webroot
/1352/32440/ScoreDemo.java:35: error: illegal st
art of expression
                             Mathsum += int[i][0
];
                                 ^
                                  18 errors

相关截图：

问题描述：

我的电脑是mac系统，eclipse一直都运行不了，前面让我配置JRE的路径，我只有JavaSE,之后还是报错无法运行

相关截图：

相关代码：

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/BBQi/ArrayPrec has been compiled by a more recent version of the Java Runtime (class file version 56.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)