Creating Your Own Java Methods and Passing Values to Them

I-Tự Tạo Một Java Method Và Passing Values Vào Method Đã Tạo.

1.1- Tự tạo method để cộng các con số tăng liên tục total +=i.

class rextester{

public static void printTotal(){  // tự tạo method nầy và phải co static

int total = 0;

for(int i = 1 ; i<=6; i++){

total +=i ;

System.out.println(total);}

}

public static void main(String[] args){

             printTotal();} // call method đã tự tạo

}

SUCCESS.

Output.

Compilation time: 1.03 sec, absolute running time: 0.14 sec,

cpu time: 0.11 sec, memory peak: 23 Mb, absolute service time: 1.19 sec

1

3

6

10

15

21

    

1.2- PASSING VALUES TO THE PARAMETERS OF JAVA METHOD

     * Value là integer

class rextester{

public static void passMethod(int x){ // tự tạo method nầy và phải có static

System.out.println("Passed value is :" + x ); }

public static void main(String[] args) {

      int x = 5; 

      passMethod(x); } // call và pass integer vào method đã tạo

}

SUCCESS.

Output.

Compilation time: 1.04 sec, absolute running time: 0.14 sec,

cpu time: 0.09 sec, memory peak: 22 Mb, absolute service time: 1.19 sec

Passed value is :5

  * Value là string

class rextester{

 public static void passMethod(String str){

System.out.println("Passed value is :" + str ); }

public static void main(String[] args) {

      String str = "Hello My Friends"; 

      passMethod(str); } // call và pass string vào method đã tạo

}

 SUCCESS.

Output.

Compilation time: 0.94 sec, absolute running time: 0.24 sec, 

cpu time: 0.12 sec, memory peak: 23 Mb, absolute service time: 1.18 sec

 Passed value is :Hello My Friends

* Value là  name

class rextester{

      public static void Person(String name){ // tự tạo method nầy.

      System.out.println("Passed Name is :" + name ); }

      public static void main(String []args){

     String name= "Henry";

              Person(name);}  // call và pass string vào method đã tạo          

}

SUCCESS.

Output.

Compilation time: 1.03 sec, absolute running time: 0.15 sec,

cpu time: 0.1 sec, memory peak: 23 Mb, absolute service time: 1.18 sec

Passed Name is :Henry

II-Tư tạo nhiều methods và pass data vào những methods đã tạo.

 2.1

      class Rextester{ 

     public static void Employee(String name){

         System.out.println("Name:"+ name );}

     public static void empAge(int x){

         System.out.println("Age:" + x );}

     public static void main(String args[]){

         String name =  "Xaoke";int x =26;

         Employee(name);empAge(x); }

     }

SUCCESS.

Output. Compilation time: 0.94 sec, absolute running time: 0.14 sec,

cpu time: 0.09 sec, memory peak: 23 Mb, absolute service time: 1.09 sec

Name:Xaoke

Age:26

2.2

    class Rextester{ 

 public static void Test(String name,int x,String skill){

System.out.println(name +" "+ x +" "+ skill);}

public static void main(String[] args){

String name= "Henry"; int x=26; String skill="Programmer";

Test(name,x,skill);}

}

SUCCESS.

output

Compilation time: 0.84 sec, absolute running time: 0.13 sec,

 cpu time: 0.06 sec, memory peak: 18 Mb, absolute service time: 0.98 sec

Henry 26 Programmer

2.3

 class Rextester{ 

 public static void Test1(String name1,int x1,String skill1){

 System.out.println(name1 +" "+ x1 +" "+ skill1);}

 public static void Test2(String name2,int x2,String skill2){

 System.out.println(name2 +" "+ x2 +" "+ skill2);}

  public static void main(String[] args){

String name1= "Henry"; int x1=26; String skill1="Programmer";

String name2= "Pano"; int x2=69; String skill2="Engineer";

Test1(name1,x1,skill1);Test2(name2,x2,skill2); }

}

SUCCESS.

output

Compilation time: 0.83 sec, absolute running time: 0.13 sec,

 cpu time: 0.06 sec, memory peak: 18 Mb, absolute service time: 0.97 sec

Henry 26 Programmer

Pano 69 Engineer

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