云南大学JAVA程序设计实验四.doc
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指标等级 A B C D 功能完整 程序质量 按时检查 提问回答 检查时间 总评成绩 云南大学软件学院
实 验 报 告
课程名称： JAVA程序设计实验 实验名称： lab4
学 号： 20111120279 姓 名： 李张昱
一、实验目的 练习Java基本编程结构，包括字符串，输入输出等。
二、实验内容
1.Program 1
Write a program called String1.java and do the following:? Create a String object that accepts input from the user.? Referencing the JDK docs, execute 2 different methods on the String.? Print the results of the methods.?
Result:
Input a string:
How are you
length of string is 11 first 5 bytes of string are How a
根据实验要求写了以下程序：
package lab4;
import java.util.*;
public class String1 {
public static void main(String[] args){
Scanner in=new Scanner(System.in);
System.out.println(Input a string:);
String str=in.nextLine();
int n=str.length();
String substr=str.substring(0,5);
System.out.println(lenth of string is +n);
System.out.println(first 5 bytes of string are +substr);
}
}
2.Program 2
Write a program called StringTokenizer1.java that accepts a string, looks for commas within the string, and breaks the string up into the parts separated by the comma.?
For example, the string Kunming, Yunnan, China would return three strings: String1 = Kunming String2 = Yunnan String3 = China
根据实验要求写了以下程序：
package lab4;
import java.util.*;
public class StringTokenizer1 {
public static void main(String[] args){
Scanner in=new Scanner(System.in);
System.out.println(Please input a string seperated by comma:);
String str=in.nextLine();
String [] a=str.split(,);
for(int i=0;ia.length;i++)
System.out.println(String+(i+1)+=+a[i]);
}
}
3.Program 3
Design and write a Java class named SalesArray.java that will:
Declare a two-dimensional integer array named sales.? Populate the first four columns using the following data.
Quarter 1 Quarter 2 Quarter3 Quarter 4 Total Dept. 1 750 660 910 800 Dept. 2 800 700 950 900 Dept. 3 700 600 750 600 Dept. 4 850 800 1000 950 Dept. 5 900 800 960 980 Total Write a loop to compute a
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