public class TestClass {
public static void main(String[] args) {
// 미리 인스턴스 생성할 필요없이 사용시에 호출을 하면 됨
System.out.print();
}
}
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
public class TestClass {
public static void main(String[] args) throws IOException {
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));
writer.write("temp");
writer.write("12345", 0, 3);
writer.write('c');
write.flush();
write.close();
/*
출력 :
temp123c
*/
}
}
BufferedWriter 사용시 IOException을 설정해주어야함
println도 똑같다 마지막에 줄바꿈을 해줄뿐
void print(boolean)
void print(char)
void print(int)
void print(long)
void print(float)
void print(double)
void print(char[])
void print(String)
void print(Object)
// 출력도 character값으로 출력이 됨
// ex) writer.write(65); -> 출력 : A
writer.write(int c);
writer.write(String str);
// off <= String 출력 길이 > len
writer.write(String s, int off, int len);
writer.write(char[] cbuf);
writer.write(char[] cbuf, int off, int len);
// int
System.out.print(100);
// String
System.out.print("temp");
// double
System.out.print(100.234);
// Object
System.out.println(new int[]{1, 2, 3});
/*
출력 :
100temp100.234[I@34ce8af7
Object 출력 시 출력되는 것은 객체의 주소이기 때문에 실행할 때 마다 값이 다르게 나음
*/
writer.write("temp");
writer.write("12345", 0, 3);
writer.write('c');
write.flush();
write.close();
/*
출력 :
temp123c
*/
속도 측면에서는 bufferedWriter가 더 좋다
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