Java Getters和Setters在swing ActionListner中不起作用

我正在用Java制作一个代码编辑器，我使用了RSyntaxTextAreajar文件来获得帮助。问题是，应用程序中有一个ComboBox，我们可以使用它切换语言。RSyntaxTextArea中有两种方法：setSyntaxEditingStyle()和getSyntaxEditingStyle()，它们在ComboBox动作侦听器中不起作用。请帮帮我，我被卡住了。这是代码。两种方法：

textArea.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_JAVA);
and
String a = textArea.getSyntaxEditingStyle();

不在Action Event函数内工作。它们在室外工作非常完美，但在室外无法使用。

public void actionPerformed(ActionEvent e) {

if ( language == "Python") {
try {
textArea.setSyntaxEditingStyle(null);
textArea.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_PYTHON);
textArea.getSyntaxEditingStyle();
String command = "python " + opened_file; 
Runtime.getRuntime().exec("cmd /c start cmd.exe /K " + command);
} catch (IOException e5) {
e5.printStackTrace();
}
}

else if (language == "Java") {
try {
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textArea
.setSyntaxEditingStyle(
SyntaxConstants.SYNTAX_STYLE_JAVA
);
String a = textArea.getSyntaxEditingStyle();
System.out.println(a);

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String classpath = opened_file.replace(".java", "");
String [] last_name_list = opened_file.split("\\");
String lastname = last_name_list[last_name_list.length - 1];
String folderpath = opened_file.replace(lastname, "");
String []classpath_1 = classpath.split("\\");
String class_file = classpath_1[classpath_1.length-1];

Runtime rt = Runtime.getRuntime();
rt.exec("cmd /c start cmd.exe /K "cd " + folderpath + " && javac " + opened_file + " && java " + class_file +""");


}catch (Exception e5) {
e5.printStackTrace();
}
}