Question

java中怎么将对象名让类中添加打印

package biJiaoCheng;

import javax.swing.plaf.synth.SynthSeparatorUI;

class Tv {
private int size;
private String color;

public void guige(int size, String color) {
System.out.print(this+" "); //就这里，this打印出来是哈希码，我想打印 "leShi"
this.size = size;
this.color = color;
}

void shengChan() {
System.out.print("大小：" + size + "寸" + " " + "颜色：" + color + " ");
if (this.size > 200 || this.size < 20) {
System.out.println("规格不符！");
} else {
System.out.println("可以生产");
}
}
}

public class ThisDuiXiang {

public static void main(String[] args) {
Tv leShi = new Tv();
leShi.guige(10, "black");
leShi.shengChan();

Tv kangJia = new Tv();
kangJia.guige(50, "red");
kangJia.shengChan();
}

}

打印结果：
biJiaoCheng.Tv@42ff665a 大小：10寸 颜色：black 规格不符！
biJiaoCheng.Tv@d98c113 大小：50寸 颜色：red 可以生产
想把biJiaoCheng.Tv@42ff665a是"leShi"
biJiaoCheng.Tv@d98c113是"kangJia"

Answer 1

package biJiaoCheng;

import javax.swing.plaf.synth.SynthSeparatorUI;

class Tv {
    private String brand;
	private int size;
	private String color;

	public void guige(String brand, int size, String color) {
		this.brand = brand;
		System.out.print(this.brand+"   ");        //就这里，this打印出来是哈希码，我想打印 "leShi"
		this.size = size;
		this.color = color;
	}

	void shengChan() {
		System.out.print("大小：" + size + "寸" + "      " + "颜色：" + color + "   ");
		if (this.size > 200 || this.size < 20) {
			System.out.println("规格不符！");
		} else {
			System.out.println("可以生产");
		}
	}
}

public class ThisDuiXiang {

	public static void main(String[] args) {
		Tv leShi = new Tv();
		leShi.guige("leShi",10, "black");
		leShi.shengChan();

		Tv kangJia = new Tv();
		kangJia.guige("kangJia",50, "red");
		kangJia.shengChan();
	}

}

Answer 2

楼主，覆盖 public String toString() 方法