// MyClass3_1.java
public class MyClass3_1
{
	public static void main(String args[]) 
	{
		int value;
		value=(int)(Math.random()*100);
		System.out.println("value= "+value);
		if(value>=30)
			System.out.println("其值超過30");
		else
			System.out.println("其值小于30");
	}
}