疯狂JAVA讲义第三章之数组篇

package test;

 

/**

* Desription:

* @author
orangebook

*<br/>网站：《a href="http://www.crazyit.org">疯狂Java联盟</a>

*<br/>

*/

 

public
class javadocTest {

    /**

     * 简单的测试Field

     */

    protected String name;

    public
static
void main(String[] args)

    {

        long binVall=16;

        binVall=binVall>>>2;

        System.out.println(binVall);

        System.out.println("hello world");

    }

 

}

 

package test;

/**

* Description:

* <br/>网站：<a href="http://www.crazyit.org">疯狂 Java 联盟</a>

* <br/>Copyright (c) , 2001-2012,Yeeku.H.Lee

* <br/>This program is protected by copyright laws.

* <br/>Program Name:

* <br/>Date:

* @author
orangebook

* @version 1.0

*/

public
class Test {

/**

* 简单测试
Fiedld

*/

    public
int
age;

    public Test()

    {

        

    }

    

}

 

 

 

 

 

 

package test;

public
class javadocTest {

    protected String name;

    public
static
void main(String[] args)

    {

        String[] test;

        test=new String[4];

        test[0]="疯狂Java讲义";

        test[1]="轻量级Java EE 企业应用实战";

        for(int i=0;i<test.length;++i)

        System.out.println(test[i]);

    }

 

}

 

package test;

 

public
class javadocTest {

    public
static
void main(String[] args) {

        String[] test;

        test = new String[4];

        test[0] = "疯狂Java讲义";

        test[1] = "轻量级Java EE 企业应用实战";

        test[2] = "疯狂Android讲义";

        for (String book : test)

            System.out.println(book);

    }

}

 

package test;

 

public
class javadocTest {

    public
static
void main(String[] args) {

        int[] a = { 5, 7, 20 };

        int[] b = new
int[4];

 

        System.out.println("b数组的长度为：" + b.length);

        for (int i = 0, len = a.length; i < len; ++i) {

            System.out.println(a[i]);

        }

        for (int i = 0, len = b.length; i < len; ++i) {

            System.out.println(b[i]);

        }

        b = a;

        System.out.println("b数组的长度为：" + b.length);

    }

}

 

package test;

 

public
class javadocTest {

 

    public
static
void main(String[] args) {

        Person[] students;

 

        students = new Person[2];

        Person zhang = new Person();

        zhang.age = 15;

        zhang.height = 158;

        Person lee = new Person();

        lee.age = 16;

        lee.height = 161;

        students[0] = zhang;

        students[1] = lee;

        lee.info();

        students[1].info();

        students[0].info();

    }

}

 

class Person {

    public
int
age;

    public
double
height;

 

    public
void info() {

        System.out.println("我的年龄是：" + age + ",我的身高是：" + height);

    }

}

 

package test;

 

public
class javadocTest {

 

    public
static
void main(String[] args) {

        int[][] a;

        a = new
int[4][];

        // 把a当成一维数组，查看每个数组元素的值

        for (int i = 0, len = a.length; i < len; ++i) {

            System.out.println(a[i]);

        }

        a[0] = new
int[2];

        a[0][1] = 6;

        for (int i = 0, len = a[0].length; i < len; ++i) {

            System.out.println(a[0][i]);

        }

 

    }

}

 

package test;

 

import java.util.Arrays;

 

public
class javadocTest {

 

    public
static
void main(String[] args) {

        int[] a = new
int[] { 3, 4, 5, 6 };

        int[] a2 = new
int[] { 3, 4, 5, 6 };

//用来判断两个数组是否相等

        System.out.println("a的数组和a2数组是否相等：" + Arrays.equals(a, a2));

        int[] b = Arrays.copyOf(a, 6);

        System.out.println("a的数组和b数组是否相等：" + Arrays.equals(a, b));

//将一个数组转化为字符串

        System.out.println("b数组元素为" + Arrays.toString(b));

        Arrays.fill(b, 2, 4, 1);

//对数组中的元素排序

        Arrays.sort(b);

        System.out.println("b数组的无线为：" + Arrays.toString(b));

 

    }

}