Oop 在java类中获取和设置
我被难住了。我想通过包含getter和setter来优化一些代码。这就是我到目前为止所做的:Oop 在java类中获取和设置,oop,setter,getter,accessor,Oop,Setter,Getter,Accessor,我被难住了。我想通过包含getter和setter来优化一些代码。这就是我到目前为止所做的: public class ThingHolder { private int updateCounter=0; private Object theThing; public Object getThing() { return theThing; } public void setThing(Object theThing) { this.theThing = theThing;
public class ThingHolder {
private int updateCounter=0;
private Object theThing;
public Object getThing() {
return theThing;
}
public void setThing(Object theThing) {
this.theThing = theThing;
updateCounter++;
}
public int getUpdateCounter() {
return updateCounter;
}
以及:
目前,我一直在获取错误,在我的get和set方法中找不到符号。有什么帮助吗?这些是功能 要使用函数,需要使用括号调用它
t.setThing="First Object"; t.updateCounter++;
其他缺点:你会数到两次
第一次调用.setThing,第二次调用t.updateCounter。将代码更改为:
public class ThingHolderTester {
public static void main(String[] args) {
ThingHolder t = new ThingHolder();
t.setThing("First Object");
System.out.println("The thing is currently " + t.getThing() + " and the ThingHolder has been updated " + t.getUpdateCounter() + " times");
t.setThing("Second Object");
System.out.println("The thing is currently " + t.getThing() + " and the ThingHolder has been updated " + t.getUpdateCounter() + "times");
}
问题:
创建类时,可以使用可以插入netbeans或eclipse中的get和set(插入代码->getter和setter)。然后调用main中的函数,创建所创建类的新实例。谢谢,但是如何将该项设置为具有“First Object”的值?当我尝试t.setThing=“first object”时,仍然无法找到符号;
public class ThingHolderTester {
public static void main(String[] args) {
ThingHolder t = new ThingHolder();
t.setThing("First Object");
System.out.println("The thing is currently " + t.getThing() + " and the ThingHolder has been updated " + t.getUpdateCounter() + " times");
t.setThing("Second Object");
System.out.println("The thing is currently " + t.getThing() + " and the ThingHolder has been updated " + t.getUpdateCounter() + "times");
}