불린(boolean)
//기본 사용법
boolean isT = true;
boolean isF = false;
System.out.println(isT); // true
System.out.println(isF); // false
//조건
int a =10;
int b = 5;
System.out.ptintln(a>b); //True
System.out.ptintln(a<b); //False
System.out.ptintln(10<5); //False
System.out.ptintln(a=19); //False
System.out.ptintln(10=15); //False