java求3个长方体的体积

Question

由键盘分别输入3个长方体的长宽高
计算长方体的体积;
输出3个长方体的体积

Answer 1

随便写了下，希望对你有帮助！
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Volume {
private final static int count = 3;

public static void main(String[] args) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < count; i++) {
sb.append(readString(i + 1));
sb.append("\n");
}
System.out.println(sb.toString());
}
//读取输入数据
private static String readString(int i) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String volume = "";
try {
if (i == 1)
System.out.println("请输入第" + i + "个长方体的长宽高(请以*分隔每个参数，如：1*2*3):");
else
System.out.println("请输入第" + i + "个长方体的长宽高:");
do {
volume = countVolume(br.readLine().trim());
if ("".equals(volume)) {
System.out.println("您输入的参数错误（请以*分隔每个参数，如：1*2*3)，请检查后重新输入:");
}
} while ("".equals(volume));
volume = "第" + i + "个长方体的体积是:" + volume;
} catch (IOException e) {
e.printStackTrace();
}
return volume;
}
//计算体积
private static String countVolume(String str) {
String[] volumeInfo = str.replaceAll("×", "*").replaceAll("＊", "*").split("\\*");
long length = 0;
long width = 0;
long height = 0;
if (volumeInfo.length == 3) {
length = Long.parseLong(volumeInfo[0]);
width = Long.parseLong(volumeInfo[1]);
height = Long.parseLong(volumeInfo[2]);
return String.valueOf((length * width * height));
} else {
return "";
}
}
}