1. 程式人生 > >JAVA練習

JAVA練習

最大的 scanner == images if語句 com bre rgs http

.技術分享

import java.util.Scanner;

public class T {

  public static void main(String[] args) {

  System.out.println("5+5="+5+5);
   }
}

.技術分享

(1)

import java.util.Scanner;
public class G{
  public static void main(String[] args) {

  int a=3,b;

  b=a++;

  sop("a="+a+",b="+b);

  int a=3,b;

  b=++a;

  sop("a="+a+",b="+b);

  }
}

(2).

技術分享

public class H
{
  public static void main (String[] args){
  int a=3,b;
  b=++a;
  System.out.println("a="+a+",b="+b);
  }

}

.技術分享

import java.util.Scanner;
public class I {
  public static void main(String[] args) {
  short s=3;
  s=s+4;
  sop("s="+s);
   short s=3;
  s+=4;
  sop("s="+s);
   }
}

.技術分享

import java.util.Scanner;
public class J{
  public static void main(String[] args) {
   sop(6&3);
  sop(6|3);
   sop(6^3);
  sop(3<<2);
  sop(3>>1);
   }
}

.技術分享

import java.util.Scanner;
public class K {
  public static void main(String[] args) {
   int x=0,y;
  y=x>1?100:200;
  sop("y="+y);
   }
}

(1).輸出兩個整數中較大的整數

技術分享

public class M
{
public static void main (String[] args){
int a=1,b=0,max;
max=a>b?a:b;
System.out.println("max="+a);
}

}

(2) 輸出三個整數中最大的整數

技術分享

public class M2
{
  public static void main (String[] args){
  int a=1,b=0,c=3,max;
  max=a>b?a:b;
  max=c>max?c:max;
  System.out.println("max="+c);
 }

}

.技術分享

import java.util.Scanner;

public class N {
public static void main(String[] args) {
  int weekDay=3;
   if(weekDay==1){
      sop("今天是星期一");
   }
   else if(weekDay==2){
      sop("今天是星期二");
   }
   else if(weekDay==3){
      sop("今天是星期三");
   }
   else{
     sop("沒有這一天");
   }
   int month=8;
   }
}

(2)使用關聯的if語句

技術分享

public class O
{
  public static void main (String[] args){
  int weekDay=3;
  if(weekDay==1){
    System.out.println("今天是星期一");
  }else if(weekDay==2){
    System.out.println("今天是星期二");
  }else if(weekDay==3){
    System.out.println("今天是星期三");
  }else if(weekDay==4){
    System.out.println("今天是星期四");
  }else if(weekDay==5){
    System.out.println("今天是星期五");
  }else if(weekDay==6){
    System.out.println("今天是星期六");
  }else if(weekDay==7){
    System.out.println("今天是星期七");
  }
  else{
    System.out.println("沒有這一天");
  }
  }
}

練習.

技術分享

public class P
{
  public static void main (String[] args){
  int month=3;
  if(month==1){
    System.out.println("這個月是冬天");
  }
  if(month==2){
    System.out.println("這個月是冬天");
  }
  if(month==3){
    System.out.println("這個月是春天");
  }
  if(month==4){
    System.out.println("這個月是春天");
  }
  if(month==5){
    System.out.println("這個月是春天");
  }
  if(month==6){
    System.out.println("這個月是夏天");
  }
  if(month==7){
    System.out.println("這個月是夏天");
  }
  if(month==8){
    System.out.println("這個月是夏天");
  }
  if(month==9){
    System.out.println("這個月是秋天");
  }
  if(month==10){
    System.out.println("這個月是秋天");
  }
  if(month==11){
    System.out.println("這個月是秋天");
  }
  if(month==12){
    System.out.println("這個月是冬天");
  }

  System.out.println(month);
  }

}

7.

import java.util.Scanner;
public class CH {
public static void main(String[] args) {
  int a=84,b=3;
char option=‘%‘;
switch (option)
{
case ‘+‘:
System.out.println("a+b="+(a+b));
break;
case ‘-‘:
System.out.println("a-b="+(a-b));
break;
case ‘*‘:
System.out.println("a*b="+(a*b));
break;
case ‘/‘:
System.out.println("a/b="+(a/b));
break;
case ‘%‘:
System.out.println("a%b="+(a%b));
break;
default:
System.out.println("a%b="+(a%b));
break;
}
   }
}

8.

import java.util.Scanner;
public class CH {
   public static void main(String[] args) {
   int x=1;
   do{
      sop("x="+x);
     x++;
   }
  while(x<1);
   }
}

import java.util.Scanner;
public class CH {
   public static void main(String[] args) {
   int y=1;
   while(y<1){
      sop("y="+y);
      y++;
    }
   }
}

9.

import java.util.Scanner;
public class CH {
   public static void main(String[] args) {
   for(int x=1;x<3;x++)
  {
    sop("x="+x);
  }
   }
}

9.

import java.util.Scanner;

public class CH {
  public static void main(String[] args) {
   for(sop("a");sop("b");sop("c")
  {
     sop("d");
  }
   }
}

JAVA練習