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//都是从新手过来的，以下代码供参考
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//1.
public class BankAccount {
private static String acctnum;
private static double money;
private static void showAcct() {
System.out.println("账号为: " + acctnum);
}
private static void showMoney() {
System.out.println("余额为: " + money);
}
public BankAccount(String acc, double m) {
this.acctnum = acc;
this.money = m;
}
public static void main(String[] args) {
BankAccount ba = new BankAccount("626600018888", 5000.00);
ba.showAcct();
ba.showMoney();
}
}
//2.
public class Triangle {
private static float a;
private static float b;
private static float c;
public Triangle(float a, float b, float c) {
this.a = a;
this.b = b;
this.c = c;
}
public static boolean judgeTriangle(float a, float b, float c) {
if ((a Math.abs(b - c) a b + c)
(b Math.abs(a - c) b a + c)
(c Math.abs(a - b) c a + b))
return true;
else
return false;
}
public float getCircumference() {
return this.a + this.b + this.c;
}
}
//3.
public class TestTriangle {
public static void main(String[] args) {
Triangle t = new Triangle(5.3f,7.8f,9.3f);
if(t.judgeTriangle(5.3f,7.8f,9.3f)){
System.out.print("能够成三角形，周长为: ");
System.out.printf("%9.2f",t.getCircumference());}
else
System.out.println("不能构成三角形");
}
}
import java.awt.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.swing.*;
public class Server{
public static void main(String args[]) throws IOException {
String str="exit";
String str2;
do{
System.out.print("请输入:");
BufferedReader str1= new BufferedReader(new InputStreamReader(System.in));
str2 =str1.readLine();
}while(str2.equals(str)==false);
System.out.println("恭喜你跳出了");
}
}
1. value建议这样声明： private int value;
2. isEven()、isOdd()、isPrime() 这三个方法体为甚不判断 this.value，非要再重新传值，这个与设计初衷相悖了吧
3. int类型的值可以直接比较，方法可以这样写：
public boolean equals(int x) {
return this.value == x;
}