业余语言练习 – 语言练习,语言学习,语言使用

java build and run 添加临时变量

root135@root135:~/Downloads/java_0/main方法和System类/main_and_System$ java -cp bin src/LearnMain.java 12 34 55 3 12 34 55

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Categorized as java

java -cp

root135@root135:~/Downloads/java_0/可见性修饰符/car$ ls bin group src Test.java root135@root135:~/Downloads/java_0/可见性修饰符/car$ javac -d bin src/*.java Test.java root135@root135:~/Downloads/java_0/可见性修饰符/car$ java -cp bin src/Car.java src/Battery.java Test.java MAX_P=2200 我是一块1度的电池,满电可以跑75公里 我是一块100度的电池,满电可以跑600公里 返回值:80.0 成员变量值:80.0 实参的值没被改变!100 220 220 root135@root135:~/Downloads/java_0/可见性修饰符/car$ java -cp src/*.java *.java MAX_P=2200 我是一块1度的电池,满电可以跑75公里 我是一块100度的电池,满电可以跑600公里 返回值:80.0 成员变量值:80.0 实参的值没被改变!100 220 220 root135@root135:~/Downloads/java_0/可见性修饰符/car$

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Categorized as java

java error package

error: end of path to source file does not match its package name car

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Categorized as java

网课专用:simplescreenrecorder+ffplay

simplescreenrecorder作用:录制屏幕+摄像头麦克风(主要原因,声音没有延迟。) Record audio->Backend(PulseAudio)->Source(2K USB Camera Mono) ffplay作用:调用本地摄像头,并显示在屏幕,鼠标可以拖动显示框移动。 ffplay -f v4l2 -i /dev/video2 -vf ‘setpts=(RTCTIME-RTCSTART)/(TB*1000000),hflip’

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Categorized as english

javac 类的构造方法

root135@root135:~/Downloads/java_0/类的构造方法/car/car$ tree . ├── bin └── src ├── Battery.java └── Car.java

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Categorized as python