How to call JAVA methods in LUA

InLUAHow to callJAVA methodIs the content to be introduced in this article, mainly to learnLUACallingJAVA method, In useLuajavaIn open-source projects, how can we call java methods in lua and pass java objects as parameters to lua functions. The following is an example:

Create a loadScript class with the following code:

 
 

  
  
public class LoadScript {  
  
  
LuaState L;  
  
  
LoadScript(final String filename){  
  
  
this.L = LuaStateFactory.newLuaState();  
  
  
this.L.openLibs();  
  
  
this.L.LdoFile(filename);  
  
  
}  
  
  
void closeScript(){  
  
  
this.L.close();  
  
  
}  
  
  
void runScriptFunction(String functionName,Object obj){  
  
  
this.L.getGlobal(functionName);  
  
  
this.L.pushJavaObject(obj);  
  
  
this.L.call(1,0);  
  
  
}  
  
  
} 
 
 

Write a java object as follows:

 
 

  
  
class LoadTest{  
  
  
String a;  
  
  
LoadScript script;  
  
  
public LoadTest(String script){  
  
  
this.script = new LoadScript(script+".lua");  
  
  
this.script.runScriptFunction("create",this);  
  
  
}  
  
  
public String getA() {  
  
  
return a;  
  
  
}  
  
  
public void setA(String a) {  
  
  
this.a = a;  
  
  
}  
  
  
} 
 
 

The following is the test code:

 
 

  
  
public static void main(String[] args) {  
  
  
LoadTest test = new loadTest("function");  
  
  
System.out.println(call.test.getA());  
  
  
} 
 
 

In this way, we can pass the test object to the following lua code:

 
 

  
  
function.lua:  
  
  
function create(M)  
  
  
M:setA("this is a")  
  
  
end 
 
 

Summary: InLUAHow to callJAVA methodI hope this article will help you!