我有错误Java:非静态变量,当在Man m1 = new Man(“ a1”,“ b1”,11)行中编译代码时,不能从静态上下文中引用它;如何解决?
public class Solution
{
public static void main(String[] args)
{
//create two object of every class here
Man m1 = new Man("a1", "b1", 11);
Man m2 = new Man("a2", "b2", 12);
Woman w1 = new Woman("a11", "b11", 13);
Woman w2 = new Woman("a22", "b22", 14);
//output them to screen here
System.out.println(m1.name + " " + m1.age + " " + m1.address);
System.out.println(m2.name + " " + m2.age + " " + m2.address);
System.out.println(w1.name + " " + w1.age + " " + w1.address);
System.out.println(w2.name + " " + w2.age + " " + w2.address);
}
//add your classes here
public class Man
{
private String name;
private String address;
private int age;
public Man(String name, String address, int age)
{
this.name = name;
this.address = address;
this.age = age;
}
}
}
}
将Man
类声明为静态,您还可以从main()
其中访问静态类(不与class的任何实例绑定Solution
):
public static class Man
我们还可以让类保持Man
非静态状态,并创建一个实例级工厂方法,该方法将创建以下实例Man
:
public class Solution {
public static void main(String[] args) {
//create two object of every class here
Solution solution = new Solution();
Man m1 = solution.createMan("a1", "b1", 11);
Man m2 = solution.createMan( "a2", "b2", 12);
//output them to screen here
System.out.println(m1.name + " " + m1.age + " " + m1.address);
System.out.println(m2.name + " " + m2.age + " " + m2.address);
}
Man createMan(String name, String address, int age) {
return new Man(name, address, age);
}
//add your classes here
public class Man {
private String name;
private String address;
private int age;
private Man(String name, String address, int age) {
this.name = name;
this.address = address;
this.age = age;
}
}
}
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