What is the solution to java heap space error

The solution to the java heap space error is: 1. Set the environment variable, the code is [set JAVA_OPTS= -Xms32m -Xmx512m]; 2. Add relevant parameters when executing the JAVA class file, the parameter is [java -Xms32m -Xmx800m cl].

The solution to the java heap space error is:

1. Set environment variables

set JAVA_OPTS= -Xms32m -Xmx512m

You can change it according to the memory of your own machine, but I tested this method and it did not solve the problem. Maybe there is something else that needs to be set.

2. java -Xms32m -Xmx800m className

is to add this parameter when executing the JAVA class file, where className is the exact class name that needs to be executed. (Including package name)

This solves the problem. And the execution speed is much faster than without setting.

If you may use Eclispe during testing, you need to enter the parameters -Xms32m -Xmx800m in the VM arguments in Eclipse ->run -arguments.

Related learning recommendations: java basics

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