Java中使用print、printf、println的示例及区别

public class PrintTest{
	public static void main(Stirng[] args){
		System.out.println("hello world");
        System.out.println("hello world");
        System.out.println("hello world");	
	}
}

public class PrintTest{
	public static void main(Stirng[] args){
		System.out.print("hello world");
        System.out.print("hello world");
        System.out.print("hello world");	
	}
}

public class PrintTest{
	public static void main(Stirng[] args){
		float a = 11.1432;
        System.out.printf("%.2f",a);
	}
}

public class Main {
    public static void main(String[] args) {
        int num = 10;
        System.out.print("num");
        System.out.print(num);
    }
}
/*
输出结果
num10
 */

public class Main {
    public static void main(String[] args) {
        int num = 10;
        System.out.println("num");
        System.out.println(num);
    }
}
/*
输出结果
num
10
 */

public class Main {
    public static void main(String[] args) {
        int num = 10;
        System.out.print("num\n");
        System.out.print(num+"\n");
    }
}
/*
输出结果
num
10
 */

%d     十进制整数
%f     十进制浮点数
%o     八进制数
%u     无符号的十进制数
%x     十六进制数
%c     单个字符
%s     字符串
%%     输出%号

public class Main {
    public static void main(String[] args) {
        int num = 10;
        System.out.printf("num等于：%d",a);
        System.out.printf("num=%d",a);
    }
}
/*
输出结果
num等于：10num=10
 */