How to use a nested Java Builder Class to construct an object?

6 次查看（过去 30 天）
Riley Gibbs
Riley Gibbs 2015-6-29
评论： Andrew Janke 2017-7-28
I'm currently trying to import and use a class that uses the Java Builder pattern and I can't seem to figure out how to instantiate an instance of the object. Below is my class setup and how I'd build it in Java for reference.
package testJavaBuilder;
public class NutritionalFacts {
private int sodium;
private int fat;
private int carbo;
public static class Builder {
private int sodium;
private int fat;
private int carbo;
public Builder(int s) {
this.sodium = s;
}
public Builder fat(int f) {
this.fat = f;
return this;
}
public Builder carbo(int c) {
this.carbo = c;
return this;
}
public NutritionalFacts build() {
return new NutritionalFacts(this);
}
}
private NutritionalFacts(Builder b) {
this.sodium = b.sodium;
this.fat = b.fat;
this.carbo = b.carbo;
}
}
NutritionalFacts facts = new NutritionalFacts.Builder(10).carbo(23).fat(1).build();
  1 个评论
Andrew Janke
Andrew Janke 2017-7-28
See https://www.mathworks.com/matlabcentral/answers/98620-how-do-i-create-an-instance-of-a-java-public-static-nested-class-from-inside-matlab-7-13-r2011b. You have to work around this by using Java Reflection calls or writing a custom Java adapter class.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Call Java from MATLAB 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by