Here you can find the source of isSystemUnix()
public static final boolean isSystemUnix()
//package com.java2s; /*/*from ww w. ja v a 2 s . c o m*/ * Copyright (c) 2018, The Modern Way. All rights reserved. * * 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.io.File; public class Main { public static final char UNX_SEPARATOR_CHAR = '/'; public static final char SYS_SEPARATOR_CHAR = File.separatorChar; public static final boolean isSystemUnix() { return SYS_SEPARATOR_CHAR == UNX_SEPARATOR_CHAR; } }