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编制程序思想第一章习题

来源:http://www.pedaLyourcycLe.com 作者:ag旗舰厅官网 时间:2019-10-05 22:00

第一个java程序,第一个java

public class HelloWord {

public static void main(String arge[]) {

System.out.println("HelloWord!");

  }

}

public class HelloWord { public static void main(String arge[]) { System.out.println("HelloWord!"); } }...

//: ch1.01/IntChar.javapackage object; import java.util.*;public class IntChar {     int x; char y;      public IntChar(){         System.out.println;        System.out.println;          }     public static void main(String[] args) {         new IntChar();     } }

/* output:
test
*///~

package Object;//: ch1.2/HelloWorld.javapublic class HelloWorld {    public static void main(String[] args) {        System.out.println("Hello, World");    }}/*     * output:(55% match) hell. it's:     *  Wed Nvember 01 13:42 MDT 2018     */// :~

//: ch1.3/ATypeName.javapackage Object;import java.util.*;public class ATypeName{    int x;    public static void main(String[] args){        ATypeName a = new ATypeName();        a.x=4;        System.out.print;    }    }/* class object*/// :~

//: ch1.4/DataOnly.java/**study * @author feilong */package Object;import java.util.*;public class DataOnly{    public static void main(String[] args){        DataOnly data = new DataOnly();    }}

//: ch1.5/Dataonly.java/**study * @author feilong */package Object;import java.util.*;public class Dataonly{        int x;        double d;        boolean b;    public static void main(String[] args){        Dataonly data = new Dataonly();        data.x=47;        data.d=1.1;        data.b=false;        System.out.println("data.x="+data.x);        System.out.println("data.d="+data.d);        System.out.println("data.b="+data.b);    }}/* outputdata.x = 47data.d = 1.1data.b = false*///:~

//: ch1.6/Storage.java/**@version 1.6* @author feilong*/package Object;import java.util.*;public class Storage{    public int storage{        return s.length()*2;    }    public static void main(String[] args){        Storage st = new Storage();        String s  = "helloword";        int l=st.storage;        System.out.println;    }}/* output: * storage; *///:~

//: ch1.7/Incrementable.java/**@author feilong*  @version 1.7*/package Object;import java.util.*;class StaticTest{    static int i = 47;}public class Incrementable{            static void increment()    {        StaticTest.i++;    }    public static void main(String[] args){        Incrementable sf = new Incrementable();        sf.increment();        System.out.println(StaticTest.i);    }}/* Output:StaticTest.i*///:~//: ch1.8/ShowStatic.java/**@author feilong*  @version 1.8*/

package object;import java.util.*;public class ShowStatic{    static int i = 7;        public static void main(String[] args){        ShowStatic ss = new ShowStatic();        ss.i=9;        ShowStatic sy = new ShowStatic();        ShowStatic sz = new ShowStatic();        System.out.println("ss.i = "+ss.i);        System.out.println("sy.i = "+sy.i);        System.out.println("sz.i = "+sz.i);    }}/* output:ss.i = 9sy.i = 9sz.i = 9*///:~

CH1.11

//: Object/AllTheColorsOfTheRaibow.java
/**@author feilong
* @version 1.0
*/
package object;
import java.util.*;

public class AllTheColorsOfTheRaibow{

int anIntegerRepreSentingColors;

void changeTheHueOfTheColor(int newHue)
{
anIntegerRepreSentingColors = newHue;
}

public static void main(String[] args)
{
AllTheColorsOfTheRaibow all = new
AllTheColorsOfTheRaibow();
all.changeTheHueOfTheColor;
System.out.println(all.anIntegerRepreSentingColors);
}
}/* output:
这个程序 抄了作者的
*///:~

ch1.12

// object/HelloWord.java
/**The first Thinking in java example program
* Displays a string and today's date
* @author feilong
* @author
* @version 2.0
*/
package object;
import java.util.*;

public class HelloWord2 {
/** Entry point to class & application
* @param args array of string arguments
* @author exceptions No exception thrown
*/
public static void main(String[] args)
{
System.out.printf("%sn","hello world");
System.out.println(new Date;
}
}/* output:
hello it's
wed November 5 23:01:34 MDT 2018
*///~

ch1.13

//: object/Documentation.java
package object;
/**
* @author feilong
* Run Documentation1.java Documentation2.java
* and Documentation3.java through javadoc. Verify
* the resulting documentation with your Web
* browser
*/
public class Documentation {
public static void main(String[] args)
{

}

}///~

ch1.14

//: object/Html.java  package object;/** * <pre> * System.out.println(new date; * </pre> * <pre> 格式化输出 </pre> */public class Html {    /** A variable comment */    public int i;    /** A method comment      * you can <em>even</em>insert a list     * <ol>     * <li> Item one     * <li> Item two     * <li> Item three     * </ol>     * <ol>     * <li>有序 HTML 列表:     * </ol>      */    public void f()    {            }}///~

ch1.15

//: ch1.2/HelloWorld.java/************here can't show*********** */package Object;import java.util.*;/** * @author feilong  *<code>d</code> */public class HelloWorld {    /** @param args description(must have two **)     * efsadf     */    public static void main(String[] args) {        /* @return description         * true         */        System.out.println("Hello, World");    }     }/*     * output:(55% match) hell. it's:     *  Wed Nvember 01 13:42 MDT 2018     */// :~

ch1.16

//: object/OverLoading.javapackage object;import java.util.*;import static net.mindview.util.Print.*;class Tree{    int height;    Tree()    {        print("Planting a seeding");        height = 0;    }    Tree(int initialHeight)    {        height = initialHeight;        print("Creating new tree that is" +        height + " feet tall");    }    void info(){        print("Tree is " +  height + "feei tall");    }    void info    {        print(s+ "; Tree is " + height + " feet tall");    }    }/** * @author feilong */public class OverLoading {    /**@param args put here can use */    public static void main(String[] args)    {        for(int i =0 ;i<5; i++)        {            Tree t = new Tree;            t.info();            t.info("OverLoading method");        }        new Tree();            }    }/*Creating new Tree that is 0  feet tallTree is 0 feet tall overloaded method: Tree is 0 feet tallcreating new Tree that is 1 feet tallTree is 1 feet talloverloading method: Tree is 1 feet talloverloading method: Tree is 2 feet tallTree is 2f feet talloverloading method: Tree is 1 feet tallCreating new Tree that  is 3 feet tallTree is 4 feet talloverloading method: Tree is 4 feet tallplanting seedling*///~

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