Java基础 awt Frame 窗体的大小不可调

•     JDK ：OpenJDK-11
•      OS ：CentOS 7.6.1810
•      IDE ：Eclipse 2019‑03
• typesetting ：Markdown

 

code

package per.jizuiku.gui;

import java.awt.Frame;

/**
 * @author 给最苦
 * @date 2019/06/30
 * @blog www.cnblogs.com/jizuiku
 */
public class Demo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Frame f = new Frame();

        f.setSize(400, 400);

        // 窗体的大小可以调整吗？ 不
        f.setResizable(false);

        f.setVisible(true);

    }

}

 

result

 

sourceCode

/**
    * Sets whether this frame is resizable by the user.
    * @param    resizable   {@code true} if this frame is resizable;
    *                       {@code false} otherwise.
    * @see      java.awt.Frame#isResizable
    */
public void setResizable(boolean resizable) {
    boolean oldResizable = this.resizable;
    boolean testvalid = false;

    synchronized (this) {
        this.resizable = resizable;
        FramePeer peer = (FramePeer)this.peer;
        if (peer != null) {
            peer.setResizable(resizable);
            testvalid = true;
        }
    }

    // On some platforms, changing the resizable state affects
    // the insets of the Frame. If we could, we'd call invalidate()
    // from the peer, but we need to guarantee that we're not holding
    // the Frame lock when we call invalidate().
    if (testvalid) {
        invalidateIfValid();
    }
    firePropertyChange("resizable", oldResizable, resizable);
}

 

resource

• [ JDK ] openjdk.java.net
• [ doc - 参考 ] docs.oracle.com/en/java/javase/11
• [ 规范 - 推荐 ] yq.aliyun.com/articles/69327
• [ 规范 - 推荐 ] google.github.io/styleguide
• [ 源码 ] hg.openjdk.java.net
• [ OS ] www.centos.org
• [ IDE ] www.eclipse.org/downloads/packages
• [ 平台 ] www.cnblogs.com

 

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感谢帮助过 给最苦 的人们。

Java、Groovy和Scala等基于JVM的语言，优秀，值得学习。

规范的命名和代码格式等，有助于沟通和理解。

JVM的配置、监控与优化，比较实用，值得学习。