Ant compilation project resources are insufficient

Today, there are insufficient [javac] system resources for compiling projects with ant. As follows:

Buildfile: Build. xml

-Compile:
[Javac] compiling 919 source files to E: \ dshr \ webcontent \ WEB-INF \ Classes
[Javac]
[Javac]
[Javac] insufficient system resources.
[Javac] For details, see the following stack tracing.
[Javac] java. Lang. outofmemoryerror: Java heap Space

It seems that the memory is insufficient. Set it to a larger value.

the following error occurs during compilation
buildfile: build. XML

-compile:
[javac] compiling 919 source files to E: \ dshr \ webcontent \ WEB-INF \ Classes
[javac] Since fork is false, ignoring memorymaximumsize setting.
[javac]
[javac]
[javac] insufficient system resources.
[javac] For details, refer to the following stack tracing.
[javac] java. Lang. outofmemoryerror: Java heap space

Since fork is false, ignoring memorymaximumsize setting. This statement should be because fork is false, so the configured memorymaxmumsize will be ignored and the modification will continue.
<Target name = "-compile">
<Javac srcdir = "$ {srcdir}" destdir = "$ {builddir}" fork = "true" memorymaximumsize = "500 m" includes = "**/*. java "classpathref =" class_path ">
<Compilerarg value = "-xlint: unchecked"/>
</Javac>
</Target>
Use ant to compile and pass.

Note: In the ant document (% ant_home %/docs/manual/index.html by default), you can view ant tasks to list many tasks. javac is in compile tasks.
Click javac to view more parameter information.