摘要： 输入字节流：import java.io.*;public class test_main { public static void main(String[] args) { int n=-1; byte []a = new byte[100]; try ... 阅读全文

摘要： import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.Reader;import java.io.Writer;import java.util.InputMismatch... 阅读全文

摘要： class DangerException extends Exception{ String message; public DangerException() { this.message = "是危险品"; } public void toShow() { ... 阅读全文

摘要： class DangerException extends Exception{ String s; DangerException(String s){ this.s=s; } public void warnMess() { System.out.printl... 阅读全文

摘要： 接口：package mypackage;public interface DogState { public abstract void showstate();}接口实现：package mypackage;public class SoftlyState imp... 阅读全文

摘要： 接口：package mypackage;public interface ComputeWeight { public abstract double computeweight();}接口实现：package mypackage;public class Comp... 阅读全文

摘要： 接口：package mypackage;public interface computerAverage { public abstract double average(double x[]);}接口实现：package mypackage;public clas... 阅读全文

摘要： 接口：package mypackage;public interface Advertisement { public abstract void showAdvertisement(); public abstract String getCorpName();}... 阅读全文

摘要： 抽象类：package Employee_;public abstract class Employee { public abstract double earnings(double money);}子类：package Employee_;public clas... 阅读全文

摘要： 抽象类：package Animal_;public abstract class Animal { public abstract void cry(); public abstract String getAnimalName();}子类：package Anim... 阅读全文