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Call private method

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Call private method

package groups related classes. Access — private < default < protected < public.

private = class only; public = everywhere.

protected = package + subclasses.

Write one tiny example for Call private method. Compile, print one result, and say the output out loud before you type.

Use Call private method only when the problem needs it. Don’t force it into every program. Know one beginner trap.

Let's take this on the board with one tiny Main class — no extra files. Call private method — secret is private; outside code uses a getter. Start from main, go line by line, and stop at each print. That output is the proof for Call private method.

Exam tip

Draw the 4 access levels and who can see each.

Example

// Same-file demo of access idea
class Box {
  private int secret = 7;
  int getSecret() { return secret; } // package/public API
}
public class Main {
  public static void main(String[] args) {
    System.out.println(new Box().getSecret());
  }
}

Call private method — secret is private; outside code uses a getter.

Short notes

DefCall private method is a Java idea you should explain with one small example.
RuleKnow the keyword / API used for Call private method. Type a tiny Main and print one result.
RememberFor Call private method, say the output before you code.
TrapCall private method — only memorising the heading. No example, no trap.
package organizes
4 access levels

// Same-file demo of access idea class Box { private int secret = 7; int getSecret() { return secret; } // package/public API } public class Main { public static void main(String[] args) { System.out.println(new Box().getSecret()); } }

Call private method

Example

Short notes

Questions

Call private method

Example

Short notes

Questions