Java 随笔(一)

Java 静态与非静态的关系

/*
非静态可以调静态
静态不能调非静态*/
public class Xp{String characters;static int measurements;public Xp(String characters, int measurements){this.characters = characters;this.measurements = measurements;}public static void showMeasuerments(){System.out.println(measurements);}public void showCharacters(){System.out.println(this.characters + "is");this.showMeasuerments();}public static void main(String[] args){Xp xp = new Xp("夜兰", 36);xp.showCharacters();}}

Java this的浅薄理解

class Xp{public String characters;public int measurements;public Xp(int measurements, String characters){System.out.print("正在初始化已经创建好的对象:"+this);this.measurements = measurements;this.characters = characters;}//方法public void choose(){System.out.println("填写三围:\r3d");}public static void main(String[] args){Xp xp = new Xp(23, "夜兰");xp.choose();}}

Java \r

//"我是神里绫华的狗\r" //回车
//"我是神里绫华的狗\r我是申鹤的狗" //"\r"后面会覆盖前面的字符
public class Main {public static void main(String[] args) {System.out.println("我是神里绫华的狗!\r");System.out.print("我是神里绫华的狗\r我是申鹤的狗!");}
}

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