求解答，出现了新错误

import java.util.Scanner;
class XueSheng {
String xueHao;
String xingMing;
String xingBie;
float yuWenCj;
float shuXueCj;
float waiYuCj;
float yswZf;
public XueSheng() {
Scanner sc=new Scanner(System.in);
System.out.print("请输入学号:");
xueHao=sc.next();
System.out.print("请输入姓名:");
xingMing=sc.next();
System.out.print("请输入性别:");
xingBie=sc.next();
}
public void LuRuCj() {
Scanner sc=new Scanner(System.in);
System.out.print("请输入语文成绩");
yuWenCj=sc.next();
System.out.print("请输入数学成绩");
shuXueCj=sc.next();
System.out.print("请输入外语成绩");
waiYuCj=sc.next();
float sum=yuWenCj+shuXueCj+waiYuCj;
}
public class L117{
public static void main(String[] args){
XueSheng[] lw=new XueSheng[3];
for(int i=0;i<3;i++){
System.out.println("第"+(i+1)+"个学生的基本信息:");
lw[i]=new XueSheng();
}
for(int i=0;i<3;i++){
System.out.println("请分别录入"+lw[i].name+"的成绩:");
}
}
}
}

新错误
B:\lwl>javac L117.java
L117.java:22: 错误: 不兼容的类型: String无法转换为float
yuWenCj=sc.next();
^
L117.java:24: 错误: 不兼容的类型: String无法转换为float
shuXueCj=sc.next();
^
L117.java:26: 错误: 不兼容的类型: String无法转换为float
waiYuCj=sc.next();
^
L117.java:37: 错误: 找不到符号
System.out.println("请分别录入"+lw[i].name+"的成绩:");
^
符号: 变量 name
位置: 类 XueSheng
L117.java:30: 错误: 内部类XueSheng.L117中的静态声明非法
public static void main(String[] args){
^
修饰符 'static' 仅允许在常量变量声明中使用
5 个错误

LuRuCj()这个方法前面加个void
有帮助的话采纳一下哦！

哪个需要返回值呀，如果不需要返回值，方法申明成void就行了呀

打断点看报错

import java.util.Scanner;

class XueSheng {
    String xueHao;
    String xingMing;
    String xingBie;
    float yuWenCj;
    float shuXueCj;
    float waiYuCj;
    float yswZf;

    public XueSheng() {
        Scanner sc = new Scanner(System.in);
        System.out.print("请输入学号:");
        xueHao = sc.next();
        System.out.print("请输入姓名:");
        xingMing = sc.next();
        System.out.print("请输入性别:");
        xingBie = sc.next();
    }

    public void luRuCj() {
        Scanner sc = new Scanner(System.in);
        System.out.print("请输入语文成绩: ");
        this.yuWenCj = sc.nextFloat();
        System.out.print("请输入数学成绩: ");
        this.shuXueCj = sc.nextFloat();
        System.out.print("请输入外语成绩: ");
        this.waiYuCj = sc.nextFloat();
        this.yswZf = yuWenCj + shuXueCj + waiYuCj;
    }

    @Override
    public String toString() {
        return "{" +
                "xueHao='" + xueHao + '\'' +
                ", xingMing='" + xingMing + '\'' +
                ", xingBie='" + xingBie + '\'' +
                ", yuWenCj=" + yuWenCj +
                ", shuXueCj=" + shuXueCj +
                ", waiYuCj=" + waiYuCj +
                ", yswZf=" + yswZf +
                '}';
    }

    public static void main(String[] args) {
        XueSheng[] lw = new XueSheng[3];
        for (int i = 0; i < lw.length; i++) {
            System.out.println("第" + (i + 1) + "个学生的基本信息:");
            lw[i] = new XueSheng();
        }
        for (int i = 0; i < lw.length; i++) {
            System.out.println("请分别录入" + lw[i].xingMing + "的成绩:");
            lw[i].luRuCj();
        }
        for (int i = 0; i < lw.length; i++) {
            System.out.println(lw[i].toString());
        }
    }
}