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在Java中,封装是一种将数据(属性)和操作数据的方法(函数)捆绑在一起,并对外部隐藏对象的内部实现细节的编程技术。要在Java抽象类中实现封装,可以遵循以下几个步骤:
abstract class Animal {
private String name;
private int age;
}
abstract class Animal {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
if (age >= 0) {
this.age = age;
} else {
System.out.println("Invalid age value");
}
}
}
abstract class Animal {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
if (age >= 0) {
this.age = age;
} else {
System.out.println("Invalid age value");
}
}
private void makeSound() {
// Implementation of the makeSound method will be provided by subclasses
}
}
abstract class Animal {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
if (age >= 0) {
this.age = age;
} else {
System.out.println("Invalid age value");
}
}
private void makeSound() {
// Implementation of the makeSound method will be provided by subclasses
}
public abstract void eat();
}
通过遵循以上步骤,可以在Java抽象类中实现封装。
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