eclipse 我怎样才能在原始类型（int）上解决这个等于
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How can i fix this equals on primitive type(int)
提问by Caitlin Craik
heres my code for a library application
这是我的图书馆应用程序代码
package com.accenture.totalbeginner;
public class Person {
private String name;
private int maximumbooks;
public Person() {
name = "unknown name";
maximumbooks = 3;
}
public String getName() {
return name;
}
public void setName(String anyname) {
name = anyname;
}
public int getMaximumbooks() {
return maximumbooks;
}
public void setMaximumbooks(int maximumbooks) {
this.maximumbooks = maximumbooks;
}
public String toString() {
return this.getName() + " (" + this.getMaximumbooks() + " books)";
}
public boolean equals(Person p1) {
if(!this.getName().equals(p1.getName())) {
return false;
}
if(!this.getMaximumbooks().equals(p1.getMaximumbooks())) {
return false;
}
return true;
}
}
(!this.getMaximumbooks().equals(p1.getMaximumbooks()))
this is saying cannot invoke .equals on primitive type(int)
这是说不能在原始类型（int）上调用 .equals
I know what that means, but I have tried everything and I can't think how to correct it.
我知道这意味着什么，但我已经尝试了一切，但我想不出如何纠正它。
If you need any of the code from other classes let me know.
如果您需要其他课程的任何代码，请告诉我。
回答by Alexandre Beaudet
equals()is used for Objects (String, Integer, etc...)
equals()用于Objects ( String, Integer, 等等...)
For primitiveslike int, boolean, charetc, you have to use ==
对于原语喜欢int，boolean，char等等，你必须使用==
回答by Jens
getMaximumbooks()returns a primitive type intnot an Object. You have to compare it with ==or in you case !=(not equals)
getMaximumbooks()返回原始类型int而不是Object. 您必须将它与==或在您的情况下!=（不是equals）进行比较
if (this.getMaximumbooks() != p1.getMaximumbooks())
{
return false;
}
return true;
回答by Yassin Hajaj
Just use ==if you're comparing primitives.
只要使用==如果您要比较的图元。
Also, try not to use getterswhen working into the class because you have already access to all the fields (privateor not).
此外，getters在进入课堂时尽量不要使用，因为您已经访问了所有字段（private或没有）。
public boolean equals(Person p1)
{
return this.maximumBooks == p1.getMaximumBooks();
}
