org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.OutOfMemoryError: Java heap space)

这个异常通常是因为 Java 程序运行时申请的内存不足导致的。要解决这个问题，可以尝试以下几种方法：
1. 增加 Java 程序的内存限制，可以通过在运行程序时添加 JVM 参数 -Xmx 来增加内存限制，例如：java -Xmx2g MyProgram。
2. 检查程序代码，看是否存在内存泄漏等问题。
3. 减少程序对内存的占用，例如使用缓存等技术。

相关问题

org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IllegalArgumentException: Argument cannot be null)

This exception indicates that an argument passed to a method in the SWT (Standard Widget Toolkit) library is null, which is not allowed.

To resolve this issue, you need to identify the method that is throwing this exception and ensure that all the arguments passed to it are not null. You can do this by checking the code that is executing when the exception occurs and tracing it back to the method that is causing the problem.

Once you have identified the method, you can check its documentation to see which arguments are required and ensure that you are passing valid values for them. You may also need to add some null checks in your code to prevent this exception from occurring.

Overall, this exception is often caused by programming errors, such as forgetting to initialize a variable or passing null to a method that does not allow it. Therefore, it is important to carefully review your code and ensure that all arguments are properly initialized and passed to methods.

kettle报错，Failed to execute runable(java.lang.OutOfMemoryError:Java heap space)

Kettle是一款ETL工具，出现报错信息"Failed to execute runable(java.lang.OutOfMemoryError:Java heap space)"说明Kettle在执行任务时，Java虚拟机(JVM)的堆内存空间不足。这可能是由于Kettle处理的数据量过大或者Kettle所需的内存超出了JVM的最大内存限制所导致的。为了解决这个问题，可以采取以下措施：
1. 增加JVM的堆内存大小，可以通过编辑spoon.sh（或spoon.bat）文件来修改JVM的启动参数，增加堆内存大小，比如：-Xmx1024m。
2. 对于大规模数据处理，可以通过增加Kettle的分块大小来分批次处理数据，以减少单次任务处理的数据量。
3. 优化Kettle任务的设计，避免不必要的数据处理操作和数据存储操作。