1.자바의 특징중 플랫폼 독립적이다 라는것에 대한 설명
class Account{
int money=100;
public void test(int money){
System.out.println(this.money+money);
}
}
publicclass TestVariable {
publicstaticvoid main(String[] args) {
Account a=new Account();
a.test(50);
}
}
-> 150
////////////////////////////////////////////////////////////////////
public class Person{
int money;
int age = 1;
String name;
Person(){}
Person(String name){
this.name=name;
}
Person(int money,int age){
this.money=money;
this.age=age;
}
}
class TestPerson{
publicstaticvoid main(String[] args){
Person p=new Person();
System.out.println("money : "+p.money+" age : "+p.age+" name : "
+p.name);
Person p1=new Person("보아");
System.out.println("money : "+p1.money+" age : "+p1.age+" name : "
+p1.name);
Person p2=new Person(100,3);
System.out.println("money : "+p2.money+" age : "+p2.age+" name : "
+p2.name);
}
}
0 1 null
-> 0 1 보아
100 3 null
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
class Person{
private String name;
public Person(String name) {
super();
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
public class Test{
public static void main(String[] args){
Person p1=new Person("보아");
Person p2=new Person("유이");
p2=p1;
System.out.println(p2.getName());
}
}
-->보아
///////////////////////////////////////////////////////////////////////////////////////////
class Person{
private String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
class PersonService{
public void pass1(Person p){
p.setName("미쓰에이");
}
public void pass2(Person p){
p=new Person("소녀시대");
}
}
public class Test {
public static void main(String[] args) {
Person p=new Person("2NE1");
PersonService service = new PersonService();
service.pass1(p);
System.out.println(p.getName());
service.pass2(p);
System.out.println(p.getName());
}
}
-> 미쓰a x 2
///////////////////////////////////////////////////////////////////////////////////////////////////
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