---자바에서 객체선언---
class Person {
String name = "홍길동"; String address="서울시 서대문구"; int age = 32;
int showAge() { return this.age; }
void showTitle(String title) { System.out.println(title); }
void showAddress() { System.out.println(this.address); }
void showName() { System.out.println(this.name); }
}
class Operation {
int x = 0; int y = 0;
void doIt(int su1, int su2) {
int result1 = this.add(su1,su2); int result2 = this.sub(su1,su2);
int result3 = this.add(su1,su2); int result4 = this.div(su1,su2);
System.out.println("덧셈의 결과:"+result1); System.out.println("뺄셈의 결과:"+result2);
System.out.println("곱셈의 결과:"+result3); System.out.println("나눗셈의 결과:"+result4);
}
int div(int s1, int s2) { this.setValue(s1, s2); return this.x / this.y; }
int mul(int s1, int s2) { this.setValue(s1, s2); return this.x * this.y; }
int sub(int n1, int n2) { this.setValue(n1,n2); return this.x - this.y; }
int add(int n1, int n2) { this.setValue(n1,n2); return this.x + this.y; }
void setValue(int n1, int n2) { this.x = n1; this.y = n2; }
}