如何从类B执行类A的run方法

public class AplotPdfPrintLocal extends ApplicationWindow {
private String userSelectedFile;

public AplotPdfPrintLocal(String pdfFilePath) {
   super(null);
   this.userSelectedFile = pdfFilePath;
}

public void run() {
   setBlockOnOpen(true);
   open();
   Display.getCurrent().dispose();
}

etc........

I want to execute the above class from Class B

我想从B类执行上面的类

Method is class B - below

方法是B类-下面。

public void startPDFPrint() throws Exception {
      AplotPdfPrintLocal pdfPrint = new AplotPdfPrintLocal(getPDFFileName()).run();
}

I am getting a error that I need to change the return type of run from void to plotPdfPrintLocal

我得到一个错误，我需要将run的返回类型从void更改为plotPdfPrintLocal

Am I going about calling the class wrong?

我是不是要把这堂课叫错了?

1 个解决方案

#1

Change it to:

把它改成:

public void startPDFPrint() throws Exception {
      AplotPdfPrintLocal pdfPrint = new AplotPdfPrintLocal(getPDFFileName());
      pdfPrint.run();
}

或

public void startPDFPrint() throws Exception {
      new AplotPdfPrintLocal(getPDFFileName()).run();
}

what the compiler is saying is that you're trying to assign the result of the run method (void) to left member of the expression, the AplotPdfPrintLocal pdfPrint variable.

编译器说的是，您试图将run方法(void)的结果分配给表达式的左成员aplotpdfprintpdfprintpdfprint变量。

So, due to the fact that run is "returning" void, there is an error, a discrepancy between the expected AplotPdfPrintLocal type (declared on the left side) and the actual return type: void.

因此，由于run是“return”void，所以在预期的AplotPdfPrintLocal类型(在左边声明)和实际的return类型之间存在一个错误，即void。

#1