Java tutorial
//package com.java2s; /* * Copyright 2011 Raffael Herzog * * 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 java.awt.Component; import java.awt.Font; import java.awt.FontMetrics; public class Main { public static int getLineHeight(Component component, int count) { return getFontMetrics(component).getHeight() * count; } public static FontMetrics getFontMetrics(Component component) { Font font = component.getFont(); if (font == null) { font = Font.getFont(Font.DIALOG); } return component.getFontMetrics(font); } }