编辑代码

class Main {
	public static void main(String[] args) {
        //JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。
		System.out.println("Hello world!   - java.jsrun.net ");
	}
}
class Dog {
    String breed;
    int size;
    String colour;
    int age;
    static double height = 6;
    public Dog(){

    }
    public Dog(String breeds, int sizes, String colours, int ages){
            breed = breeds;
            size = sizes;
            colour = colours;
            age = ages;
    }
    void printDog(){
        System.out.println(breed);
    }
    void eat() {
        int a = 6; 
    }
 
    void run() {
    }
 
    void sleep(){
    }
 
    void name(){
    }
}