java - Eclipse调试执行Java程序而不在断点处停止

Question

我是 Java 新手，我正在尝试调试 Java 代码并希望在断点处停止执行。但我在调试 View 中收到以下消息:

<terminated>pullData [Java Application] 
    <terminated>Core_java.Excelread at localhost:57966  
    <terminated, exit value: 0>C:\Program Files\Java\jdk1.8.0_144\jre\bin\javaw.exe (25-Nov-2017, 12:04:21 PM)  

下面是我的代码:

 import java.io.*;
 import jxl.*;

 public class Excelread {

     public static void main(String[] args) throws Throwable {
         String Filename = "C:\\library\\TestData.xls";
         String Sheetname = "Source";
         String[][] arrayExcelData = null;
         FileInputStream fis = new FileInputStream(Filename);
         Workbook WB = Workbook.getWorkbook(fis);
         Sheet SH = WB.getSheet(Sheetname);
●        SH.getColumns();
         SH.getRows();

             /* System.out.println(TotalCol +" "+ TotalRow);
             arrayExcelData = new String [TotalRow][TotalCol];
             for (int i=0; i<TotalRow; i++) {
                 for(int j=0;j<TotalCol;j++) {
                     arrayExcelData[i][j] = SH.getCell(j,i).getContents();
                     System.out.print(arrayExcelData[i][j]+ "\t");
                 }
                 System.out.println();
             }*/
     }
 }

Answer 1

如果您设置断点并执行 Run → Run 而不是 Run → 调试(或通过相应的工具栏按钮 而不是 )，断点将被忽略。

参见Help - Eclipse Platform, Launching a Java program in debug mode .

顺便说一句，所有大写变量名称(WB、SH)都应该用于final变量，即仅常量by convention .

并抛出一个Throwable通常没有多大意义，因为 Error是 Throwable 的直接子类其描述如下:

An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.