1、輸入一個整數，如果此數為0，則輸出”石頭”,如果此數為1，則輸出”剪刀”,如果此數為2，則輸出”布”,如果為其它，則輸出”錯誤”

public?class?IfTest1?{
static?int?number;
public?static?void?main(String[]?args)?{
????System.out.println("請輸入一個整數：");
????Scanner?sc?=?new?Scanner(System.in);
????number?=?sc.nextInt();
????if(number==0){
????????System.out.println("石頭");
????}else?if(number==1){
????????System.out.println("剪刀");
????}?else?if(number==2){
????????System.out.println("布");
????}else{
????????System.out.println("錯誤");
????????}
????}
?}

2、輸入三個數比較大小，輸出最大的數

public?class?IfTest2?{
public?static?void?main(String[]?args)?{
System.out.println("請輸入");
??Scanner?sc?=?new?Scanner(System.in);
??String?x=sc.nextLine();
??String?y=sc.nextLine();
??String?z=sc.nextLine();
??Double?a=Double.parseDouble(x);
??Double?b=Double.parseDouble(y);
??Double?c=Double.parseDouble(z);
??if(a>b){
???if(a>c){
????System.out.println(a);
???}
???else
???{
????System.out.println(c);;
???}
??}
??else
??{
???if(b>c){
????System.out.println(b);
???}
???else
???{
????System.out.println(c);
???}
????
??}
}
}

3、輸入一個整數，如果輸入的數大于等于1000，那么輸出“輸入的數>=1000”,否則的話就輸出“輸入的數<1000”。

public?class?IfTest3?{
static?int?number;
public?static?void?main(String[]?args)?{
????System.out.println("輸入一個整數:");
????Scanner?sc?=?new?Scanner(System.in);
????number?=?sc.nextInt();
????if(number>=1000){
????????System.out.println("輸入的數>=1000");
????}else{
????????System.out.println("輸入的數<1000");
???????}
???}
}

4、輸入三個int型的數據，放入到a,b,c三個變量中去，使用條件結構與交換邏輯將這三個變量中的值從小到大排列。

public?class?IfTest4?{
static?int?a,b,c,max,middle,min;
public?static?void?main(String[]?args)?{
????System.out.println("輸入三個整數：");
????Scanner?sc?=?new?Scanner(System.in);
????a?=?sc.nextInt();
????b?=?sc.nextInt();
????c?=?sc.nextInt();
????max?=a;
????if(b>a&&b>c){
????????max?=?b;
????}
????if(c>a&&c>b){
????????max?=?c;
????}
????min?=?a;
????if(b

5、輸入一個年份，判是閏年還是平年

public?class?IfTest5?{
static?int?age;
public?static?void?main(String[]?args)?{
????System.out.println("輸入一個年份：");
????Scanner?sc?=?new?Scanner(System.in);
????age?=?sc.nextInt();
????if(age%4==0||age%100==0||age%400==0){
????????System.out.println(age+"是閏年！！！！");
????}else{
????????System.out.println(age+"是平年！！！！");
????????}
??????}?
????}

以上就是動力節點java培訓機構的小編針對“編程基礎之Java if條件語句練習題”的內容進行的回答，希望對大家有所幫助，如有疑問，請在線咨詢，有專業老師隨時為你服務。