<上机练习>

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练习1:

package com.mm;import java.util.*;public class stu {String[] g = new String[5];public void fell(String name) {for (int i = 0; i < g.length; i++) {if (g[i] == null) {g[i] = name;break;}}}public void showstu() {for (int i = 0; i < g.length; i++) {if (g[i] != null) {System.out.println(g[i]);}}}public void show() {for (int i = 0; i < g.length; i++) {System.out.println("请输入客户姓名:");Scanner input = new Scanner(System.in);String name = input.next();fell(name);}System.out.println("**********************************");System.out.println("\t客户姓名列表");System.out.println("**********************************");showstu();}public void showeet(String old, String newname, String[] g) {for (int i = 0; i < g.length; i++) {if (g[i].equals(old)) {g[i] = newname;}}/* * for (int i = 0; i < g.length; i++) { System.out.println(g[i]); } */showstu();}}

package com.mm;public class stu11 {public static void main(String[] args) {stu u = new stu();u.show();u.showeet("学生1", "王羲之", u.g);}}

练习2:

package com.ss;public class stu {String name;int age;public void showent(){System.out.println(name+"\t"+age);}}

package com.ss;public class stu1 {stu[] g=new stu[5];public void add(stu student){for(int i=0;i<g.length;i++){if(g[i]==null){g[i]=student;break;}}}public void showtil(){for(int i=0;i<g.length;i++){if(g[i]!=null){g[i].showent();}}System.out.println();}}

package com.ss;public class stu2 {public static void main(String[] args) {stu h=new stu();h.age=13;h.name="小轩";stu k=new stu();k.age=14;k.name="小华";stu1 gg=new stu1();gg.add(h);gg.add(k);gg.showtil();}}

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