Question

在java中的输出怎么是红色的字（黑色字体是正常的）？

package future;
abstract class Person{
private String name;
private int age;
public Person(String name, int age) {
this.name=name;
this.age=age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public abstract void want();
}
class Student extends Person{

private int score;
public int getScore() {
return score;
}
public void setScore(int score) {
this.score = score;
}

public Student(String name, int age,int score) {
super(name, age);
this.score=score;
}
public void want() {
System.err.println("姓名："+getName()+" 年龄："+getAge()+" 成绩："+getScore());
}

}
class Worker extends Person{

private int money;
public int getMoney() {
return money;
}
public void setMoney(int money) {
this.money = money;
}
public Worker(String name, int age,int money) {
super(name, age);
this.money=money;
}
public void want() {
System.err.println("姓名："+getName()+" 年龄："+getAge()+" 成绩："+getMoney());
}

}
public class D01 {
public static void main(String[] args) {
Student s=new Student("熊明", 13, 100);
s.want();
Worker w=new Worker("大明", 43, 6000);
w.want();
}
}

Answer 1

正常的输出语句 ...out.... 输出普通的字符串

System.out.println("-----字符串-----");//输出黑色的字

问题中的输出语句....err...  输出错误或者异常反馈的字符串, ide等为了提醒所以是醒目的红色文字

System.err.println("-----字符串-----");//输出红色的字