第五次java作業

標籤：替換   new   code   package   int   str   bsp   ati   substr   

public class homework1 {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        String str1="耿丹電腦Java20170320";        System.out.println(str1.substring(9,17));    }}

package classwork;public class Demo02{     public static void main(String[] args) {              // TODO Auto-generated method stub              String str="耿丹電腦Java20170320";                String newStr=str.replaceAll("ava","2EE");                System .out.println("替換後的結果："+newStr);        }}

public class Demo01 { public static void main(String[] args) {               // TODO Auto-generated method stub                String str="耿丹 電腦 Java 20170320";              String newStr=str.replaceAll(" ","");              System.out.println("替換後的結果："+newStr);        }}

public class homework4 {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        String str="142202199607040111";                System.out.println("此人的生日為：："+str.substring(07,04));    }}

 

第五次java作業