慕盖茨0163116
2019-03-16 17:49
package immmmm; import java.util.Arrays; import java.util.Scanner; public class YC { public static void main(String[] args) { YC a=new YC(); a.zhu(); } public void zhu() { String sz[] = {"高数", "数据结构", "大学物理", "java", "网络安全", "冲啊少年",}; YC rent = new YC(); System.out.println("输入命令:1—按照名称查找图书;2—按照序号查找图书"); Scanner got = new Scanner(System.in); int x=got.nextInt(); try { if (x == 1) { System.out.println("输入图书名称:"); String y = got.next(); boolean status = Arrays.toString(sz).contains(y); if (status) { System.out.println("book:" + y); } else { throw new SMexception(); } } else if (x == 2) { System.out.println("输入图书序号:"); int z = got.nextInt(); if (z >= 0 || z <= sz.length) { System.out.println("book:" + sz[z]); } else { throw new zfexception(); } } else { throw new Myexception(); } } catch (Myexception e) { System.out.println("命令输入错误!请根据提示输入数字!"); rent.zhu(); } catch (SMexception e) { System.out.println("图书不存在!"); rent.zhu(); } catch (zfexception e) { System.out.println("图书不存在!"); } } }
int x=got.nextInt()中调用的nextInt()方法只能接受输入int类型的,不能接受字符类型
Java入门第三季
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