1.工具类
package com.ld.staticUtil;
public class Print {
private static boolean flag=true;
public static void print(Object obj){
if(flag) {
System.out.print(obj);
}
}
}
2.测试类
package com.ld;
import java.math.BigInteger;
import static com.ld.staticUtil.Print.*;
public class Test9 {
public static void main(String[] args) {
BigInteger a = new BigInteger("-111",2);
print(a);
}
}
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封装一个函数,将System.out.println(xx)封装成 print方法
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