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工厂方法 #244
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工厂方法 #244
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Original file line number | Diff line number | Diff line change |
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@@ -18,7 +18,18 @@ public class Cat { | |
* @param name 名字 | ||
* @return 创建的猫 | ||
*/ | ||
public static Cat newCat(String name, int age) {} | ||
private Cat(String name,int age){ | ||
this.name=name; | ||
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this.age=age; | ||
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} | ||
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public static Cat newCat(String name, int age) { | ||
if(name == null || age< 0.2 || name.isEmpty()){ | ||
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return INVALID_CAT; | ||
}else{ | ||
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return new Cat(name,age); | ||
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} | ||
} | ||
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public String getName() { | ||
return name; | ||
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',' 后应有空格。
'{' 前应有空格。