constructmeth.java

来自「Java就业的培训教程书籍」· Java 代码 · 共 20 行

public class ConstructMeth{
	int a,b;
	ConstructMeth(){
		a = 100;
		b = 200;
	}
	ConstructMeth(int x,int y){
		a = x;
		b = y;
	}
	public static void main(String args[])
	{
		ConstructMeth classObj1 = new ConstructMeth();
		System.out.println("无参数构造方法实例化后的信息：");
		System.out.println("a = "+classObj1.a+"   b = "+classObj1.b);
		classObj1 = new ConstructMeth(12,45);
		System.out.println("带参数构造方法实例化后的信息：");
		System.out.println("a = "+classObj1.a+"   b = "+classObj1.b);
	}
}