我想在饼图中显示百分比值,因为我有Personality
类中的百分比值,而Chart
类是我需要显示的类它。我的代码结构如下:如何将对象从一个类传送到另一个类 - JAVA
Personality.JAVA
Tree C = gson.fromJson(profile.toString(), Tree.class);
Tree.SubTree t = C.getTree();
ArrayList<Children> mc = t.getChildren();
Children c1 = mc.get(0);
ArrayList<Children1> c2 = c1.getChildren();
Children1 obj1 = c2.get(0);
private Children1 obj1; //ERROR-ILEGAL START OF EXPRESSION
public Children1 getObj1(){
return this.obj1;
}
/** ArrayList<child2> c3 = obj1.children;
child2 obj2 = c3.get(0);
ArrayList<child3> c4 = obj2.children;
child3 obj3 = c4.get(0); **/
System.out.println(obj1.getPercentage()); //ERROR - IDENTIFIER EXPECTED
Children1.JAVA
public class Children1 {
private String category;
private String id;
private String name;
private double percentage;
private double sampling_error;
private ArrayList<Children2> children;
public Double getPercentage() {
return percentage;
}
/**
*
* @param percentage
* The percentage
*/
public void setPercentage(Double percentage) {
this.percentage = percentage;
}
}
Tree.JAVA(不知道这个类是必要的,但在这里它是)
public class Tree {
private SubTree tree;
@Override
public String toString() {
return "ID: " + id + "\n" + "Name: "+ "\n" + tree+ "\n" ;
}
class SubTree{
private String id;
private String name;
private ArrayList<Children> children; //Gets Arraylist from Class - Children
public ArrayList<Children> getChildren() {
return children;
}
public void setChildren(ArrayList<Children> children) {
this.children = children;
}
}
public SubTree getTree() {
return tree;
}
public void setTree() {
this.tree = tree;
}
}
CHART类
private PieDataset createDataset(){
Personality m = new Personality();
// Personality.class = Personality();
DefaultPieDataset result = new DefaultPieDataset();
result.setValue("Value1",m.obj1); //attempted to get obj1 from Persoanlity Class
result.setValue("Linux", 10);
result.setValue("Mac", 25);
return result;
}
所以总体方案是 - 让普通的段落转换成JSON然后用java值产生图形之后解析到Java。所以在这种情况下,得到百分比值obj1
以显示在Chart class
。
希望你们明白这个问题,谢谢你们的时间:)
所以这个问题是什么? –
我与@Luminous_Dev - 你需要传输数据 - 所以有什么阻止你这样做,也许通过构造函数或方法参数?并考虑将你的代码压缩成一个可行的[mcve]/[sscce](http://sscce.org)。 –
在Chart类中,它说当悬停在m.obj1部分上时找不到符号。 –