Here you can find the source of getSynthContext(final MenuItemUI ui, final JComponent item)
public static SynthContext getSynthContext(final MenuItemUI ui, final JComponent item)
//package com.java2s; /*// www . j a va 2 s .c om * Copyright 2000-2011 JetBrains s.r.o. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import javax.swing.*; import javax.swing.plaf.MenuItemUI; import javax.swing.plaf.synth.SynthContext; import java.lang.reflect.Method; public class Main { public static SynthContext getSynthContext(final MenuItemUI ui, final JComponent item) { try { final Method getContext = ui.getClass().getMethod("getContext", JComponent.class); getContext.setAccessible(true); return (SynthContext) getContext.invoke(ui, item); } catch (Exception e) { throw new RuntimeException(e); } } }