编辑代码

public class MyOne{
    public static void main(String[]args){
    int a=12;
    char b='d';
    double c=23.65d;
    float d=34.65f;
    System.out.println("a="+a);
    System.out.println("b="+b);
    System.out.println("c="+c);
    System.out.println("d="+d);
    }
}