com.github.jdk7.Chapter1.java Source code

Introduction

Here is the source code for com.github.jdk7.Chapter1.java

Source

/*
 * Copyright (C) 2014 The doctor Authors
 * https://github.com/doctorwho1986
 *
 * 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.
 */
package com.github.jdk7;

import java.io.InputStream;

import org.apache.commons.io.IOUtils;

/**
 * @author doctor
 *
 * @date 2014920 ?5:06:46
 */
public class Chapter1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        switchString();
        binary();
        test1();
        test2(1, 2, 3, 4);
    }

    public static void switchString() {
        String aString = "no";
        switch (aString) {
        case "no":
            System.out.println(aString + " is no");
            break;
        case "yes":
            System.out.println(aString + " is yes ");
            break;
        default:
            System.out.println("defalut");
            break;
        }
    }

    public static void binary() {
        System.out.println(0b1111_0000);
        System.out.println(0b0010);
    }

    public static void test1() {
        InputStream inputStream = Chapter1.class.getResourceAsStream("/dkj/a.txt");
        try {
            String allLines = IOUtils.toString(inputStream);
        } catch (Throwable e) {

            System.err.println(" error ");
        } finally {
            IOUtils.closeQuietly(inputStream);
        }
        System.out.println("now");

        System.out.println("close");

    }

    public static <T> void test2(T... arg) {
        System.out.println(arg.getClass());
        System.out.println(arg.getClass().isArray());
        System.out.println(arg.toString());
    }
}