java - 更改 Eclipse 中的返回类型错误

Question

我在 Eclipse 中不断收到以下错误:

"The method printf(String, Object[]) in the type PrintStream is not applicable for the arguments (String, String)"

这是代码:

public class names {

private String nameOne;
  public void setName(String name){
     nameOne=name;
  }
  public String getName(){
     return nameOne;
  }
  public void saying(){
     System.out.printf("Your name is %s", getName());
  }
}

请帮忙解释一下我应该做什么。我试图删除“String”，但那很愚蠢。我有点新，所以详细的解释不会太过分(尽管简短、简单、正确的回答总是最好的)。

Answer 1

The issue was due to the wrong Compiler compliance level

要解决这个问题，您必须通过执行此操作来更改 Eclipse 中的编译器合规级别

1) 右键单击​​您的项目

2) 单击“属性”

3)点击左侧菜单中的“Java编译器”选项

4) 在右侧的 JDK 合规性部分下，将其更改为“1.5”或更高版本

Java Compiler compliance level

The Compiler compliance level indicates that which JDK level of source must be used for compilation.

例如:

If you are using some components which is defined in earlier versions of Java JDK and was removed from the later versions. Then you must use the older version of JDK to compile your code. For this the eclipse provide the use of multiple compliance level, ie; even if you are using the latest version of JDK. You can tell the compiler to compile with an older version.

JDK 1.5 在 java.io.PrintStream 类中实现了 printf() 方法，该方法提供与 C 语言 stdio 库中 printf 函数相同的格式化功能。 关注Other Developer-Friendly Enhancements了解详情。